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List of Vintage Hand-held Calculators
&
Addendum to 'The Collector's Guide to Pocket Calculators'
"E–I"

The Collector's Guide to Pocket Calculators lists over 1,500 models of early pocket calculators from over 220 companies and provides an excellent source of information on early hand-held calculators.  However, since it was published further models have come to light and are listed here.

If you have an early pocket calculator (from the 1970s with LED, vacuum fluorescent, discharge, or early LCD display, and battery powered) which is not in The Collector's Guide, please email the details as in the list below for inclusion here.

Details for each calculator are required in the format used in the book, and below:
Manufacturer or Trading Company, Model Name or Number (there may be more than one), Functions, Display Type, Battery type (and if rechargeable), Size, Country of Manufacture, any Interesting Features.

A small frontal photograph (jpeg format, about 600 pixels max dimension) of each would be useful and will be included with the details if of good quality.
Please email with details.

New Calculators

Latest Update - latest additions have the date added.

Displays are 8-digits unless described otherwise.

Go to  E   F   G   H   I

 

E

E.300 (No company given on calculator or box - appears to be the model number)

• E.300, 4-functions, %, memory, Singapore.

Eastel (Eastel Corporation, Japan)

• INTERNATIONAL, 4-function, %, square root, memory, blue VFD, 4-AA rep. batt., keyboard and display in Arabic, labelled "THE FIRST NATIONAL BANK OF BOSTON".

Eastern

• 201C, 4-functions, %, VFD. Photo.
• 233, 4-functions, %, memory, square root, VFD, 83x139x32mm / 3.3x5.5x1.25", c1975. Photo, inside.

EBL

• 612, 4-functions, 6-digits red LED, 5-AA rep. batt., Hong Kong.
• 820, 4-functions, red LED, 5-AA rep. batt., Hong Kong.

Edmund Scientific (U.S. mail-order scientific instrument and component company)

• 1945, 4 function, %, red LED, rech. batt. pack, plugs directly into AC, 51x90x15mm / 2.1x3.5x0.6",  Hong Kong. Featured calculator.
• Scientific, scientific, red LED, rech. batt. pack, plugs directly into AC, 51x90x15mm / 2.1x3.5x0.6",  Hong Kong.

EDUCATRON (LUKS INDUSTRIAL CO., LTD.)

• ER 8095, 4-function, %, memory, red LED, 9v PP3 rep. batt.

Ei (Elektronska idustrija-Niš.  Yugoslavian company)

• M.P. ALAS 811, 4-function, %, memory, red LED, 3-AA rep. batt., Yugoslavia, similar to Anita 811.
• M.P. ALAS 841, scientific, red LED, Yugoslavia, similar to Anita 841.
• M.P. ALAS 861, financial, red LED, 3-AA rep. batt., 69x118x24mm / 2.7x4.6x0.9", Yugoslavia, similar to Anita 861. Photo.

Eiko (See Unitrex)

Eleazar (Eleazar S.A., Espana)

• 2, 4-function, %, square root, memory, green VFD.

electronic

• DC 9, 4-function, blue VFD, 4-C rep. batt., large and boxy similar to Mayfair 2W01B, operating instructions on the rear in German.

Elcon (Waterloo, New South Wales, Australia)

• SC-44, scientific, red LED, Hong Kong, similar to Kings Point SC-44. Photo.

Eldorado (U.S. company)

• 8KB, listed in book.
• MATHMAGIC B, listed in book. Photo.
• TOUCHMAGIC B, listed in book. Photo.

Electro Calcul

• 80MS, 4-function, %, square root, memory, blue VFD, 2-AA rep. batt., Taiwan.
• 83M, 4-function, %, square root, square, reciprocal, pi, memory, green VFD, 2-AA rep. batt., Japan.

Electronic Readout Systems

• 1660, listed in book.

Elektronika (Russian manufacturer. Some of these models were manufactured into the 1990s.)

• B3-04, listed in book.
• B3-09M, listed in book.
• B3-14, 4-functions, %, sqare root, blue VFD, 4- AA rep. batt., 123x73x30 / 4.8x2.9x1.2", U.S.S.R. Photo.
• B3-14M, listed in book.
• B3-18 (aka B3-18A), listed in book, scientific, green VFD, 4-large button cells, 90x158x40mm / 3.5x6.2x1.6", U.S.S.R., similar to Rockwell 61R. Photo.
• B3-19 (aka B3-19M), listed in book, scientific, red LED, RPN. Photo, inside, circuit board .
• B3-21, listed in book.
• B3-23, listed in book.
• B3-24G, listed in book.
• B3-26, listed in book.
• B3-30, listed in book.
• B3-32, listed in book.
• B3-34, listed in book.
• B3-36 model also comes in green fluor display (book notes LED display).
• B3-37, listed in book.
• C3-15, listed in book. Featured calculator.
• C3-27, listed in book.
• C3-33, listed in book.
• MK-18M, scientific, VFD. Photo.
• MK-33, 4 function, %, mem, sq rt, red LED, 3- rechargeable button cells, 70x131x14mm / , USSR, 1980s-1990s, very late use of red LED display. Photo. Featured calculator.
• MK-35, scientific, VFD. Photo.
• MK-36, sci-funct, blue VFD, 3- rech. cells, 145x79x15mm / 5.7x3.1x0.6", USSR, thin metal casing similar to some Rockwell models. Photo.
• MK-37, sci-funct, LED display, 3-AA rep batt, 3.25x6.0" (8x15cm), manual has 1989 hand stamp, USSR.
• MK-52, listed in book. Photo black, Photo white.
• MK-54, listed in book. Photo.
• MK-57A. Featured calculator.
• MK-61, listed in book. Featured calculator.
• MK-66, scientific.  Feb. 22.
• MK-576, 4 function, %, square root, memory.  Feb. 22.

ELETTRONIC ("Rome, Italy")

• EC818, 4-function, %, square root, memory, green VFD, 4-AA rep. batt.

ELF

• EL-C-1, 4-function, %, memory, Red LED, a 'Standard type 2' calculator.

Elite (European market calculator)

• 2000 R, 4-function, %, sq rt., green VFD.
• 3001, 4-function, %, green VFD, 4-AA rep. batt., Japa.
• 3002 M, 4-function, %, square root, memory, green VFD.
• 4000M, listed in book. Photo.
• 4001, 4-function, %, square root, blue VFD, 2-AA rep. batt.
• 4003, listed in book. Photo.
• 4003R, 4-function, VFD, 4-AA rep batt, similar to 4003.
• 4004 MR, 4-function, %, square root, square, reciprocal, blue VFD, 4-AA rep. batt.
• 5000TM, listed in book.
• 5005TM, scientific, green VFD, 4-AA rep. batt.
• 6001, 4-function, %, sq rt., green VFD. Photo.
• 6002, 4-function, %, sq rt., pi, green VFD.
• 6004, scientific, blue VFD, 2-AA rep. batt.
• 7001SR, scientific, green VFD, 2-AA rep. batt., 84x155x31mm / 3.3x6.1x1.2". Photo.
• 7002SR, scientific, 8-digits mantissa & 2-digits exponent green VFD, 2-AA rep. batt.
• 7003SR, scientific, 8-digits mantissa & 2-digits exponent green VFD.
• 7004SR, listed in book.
• 8000, 4-function, %, memory, green VFD, 2-AA rep. batt.
• 8002, 4-function, %, square root, square, reciprocal, pi, memory, VFD, 2-AA rep. batt.  Feb. 22.
• M 7001, 4-function, %, square root, green VFD.
• S2001, 4-function, %, sq. rt., green VFD, 4-AA rep. batt.
• S2002, 4-function, %, π, sq. rt., change sign, green VFD, 4-AA rep. batt., 130x80x26mm / 5.1x3.1x1.0". Photo.
• S2003, listed in book.

Elka (Bulgarian company.  Exporter: ISOTIMPEX.  Most calculators available in different colours.)

• 101, listed in book. Featured calculator.
• 103, 4-function, memory, red LED.
• 103P, 4-function, square root, square, red LED, 4-AA rep. batt., Bulgaria.
• 131, 4-function, %, square root, square, memory, blue VFD, 4-AA rep. batt.
• 135, scientific, red LED, 4-AA rep. batt., Bulgaria.
• 160, 4-function, %, square root, square, reciprocal, blue VFD in separate tubes, 4-C rep. batt., Bulgaria.
• 732, listed in book.

Elorg (Electronorgtechnika, USSR company, made in USSR, very similar to models made by General Instruments of Canada (see General EZ2000). Possibly USSR company purchased molds and equipment after General quit calculator business.)

• 801, 4-function, %, red LED, 3-AA rep. batt., 78x153x27mm / , U.S.S.R., for export - instructions on the back in English. Featured calculator.

Eltex (Eltex Electronic, Rastatt, Germany)

• 200-R, 4-function, %, red LED, 9v PP3 rep. batt., Singapore.
• 400, scientific, red LED, 9v PP3 rep. batt., Singapore.  Feb. 22.
• 880, 4-function, %, memory, red LED, 9v PP3 rep. batt., Hong Kong, a 'Standard Type 2' model.
• 2000, listed in book. Photo.
• 2008-NC, 4-function, %, blue VFD, 2-AA rep. batt.
• 3008-NC, 4-function, %, square root, green VFD, 2-AA rep. batt.

Elwro (Mera-Elwro, Polish company)

• Bolek 440, 4-funct, %, sq rt, sq, recipr, red LED, 9v (PP3) rep batt, main chip MOS Technology MPS7545, 130x65x20mm / 5.1x2.6x0.8", 1979, Poland. Photo.
• Bolek 441, 4-funct, %, sq rt, sq, recipr, memory, red LED, 9v (PP3) rep batt, Poland.
• Lolek 460, scientific, red LED, 9v (PP3) rep batt, Poland.
• Lolek 480, scientific, red LED, 9v (PP3) rep batt, main chip MOS Technology MPS7529, 130x65x20mm / 5.1x2.6x0.8", 1978, Poland. Photo.

EMG (believed to be Elektronikus Merokeszulekek Gyara, a Hungarian company)

• Hunor 86 (Type 71086), 4-function, %, memory, red LED, unusually takes 3R12 4.5v replaceable lantern battery, 87x135x38mm / 3.4x5.3x1.5", made in Hungary. Photo, rear.

EMERSON (EMERSON ELECTRONICS)

• E12, scientific functions, 12-digits red LED, 3-AA rechargeable batteries, Hong Kong.
• SX-4500, listed in book.

Enterprex (U.S. company)

• 100M, listed in book.
• 406, listed in book.
• 605, listed in book. Photo.
• 616, listed in book.
• 904, scientific, red LED, 3-AA batt.
• 1012, scientific, red LED, 2-AA rep. batt., Hong Kong.
• A595, 4-function, %, memory, green VFD.
• BJ21 aka Black Jack, calculator & game, listed in book. Photo.
• M-90, listed in book.
• R-90, listed in book.
• SR-55 ELECTRONIC SLIDE RULE, listed in book. Photo.
• SR-65 ELECTRONIC SLIDE RULE, Scientific, green VFD.
• SR-815 SLIDE RULE CALCULATOR, scientific, green VFD, 4-AA rep. batt., the instruction manual shows the same calculator as the Victron SR 815 from Victron Electronics Corp.
• ST-100, listed in book.
• Z-50, listed in book. Photo.
• Z-51 "Television/Radio Age", 4-function, %, square root, square, memory, red LED, 9v PP3 rep. batt., Hong Kong.
• Z-90, listed in book.

Epoch

• Casino 21 "Blackjack", 4-function, sq rt., Blackjack game, 10-digits green VFD, c1978.

ER

• 100, 4-function, %, red LED, 9v PP3 rep. batt., Hong Kong, has 'ER' on the front label and '100' on the rear label.

ERL

• 812, 4-function, red LED.

E.R.S (Electronic Readout Systems Inc.)

• 24, 4-function, %, square root, memory.
• 125950, 4-function, %, memory, red LED.

ERUCOM

• ECL-81, 4-function, Japan.

ESIC

• DE88M, 4-function, %, square root, reciprocal, memory, green VFD, 9v PP3 rep. batt., has resemblance to 'Standard type 2'.

ESR (This may be part of the model number and not the company: ESR = Electronic Slide Rule.)

• 947, 4-function, square root, memory, blue VFD, 2-AA rep. batt.

ET

• CENTINA, 4-function, %, memory, red LED, 9v PP3 rep. batt., a 'Standard type 1' calculator.

EVERCO

• 880, 4-function, %, memory, red LED, a "Standard type 2" model.

Exactra (See the Exactra models by Texas Instruments)

Excel

• TN-85, 4 function, %, blue VFD, 4-AA rep batt, Japan. Photo.

exclusiv

• exclusiv, 4 function, %, memory, 9v PP3 rep. batt., Japan.  Feb. 22.

Execucal (Made in USA by Metronics Laboratories Inc., Wappingers Falls, NY)

• Execucal M55, two types of keypad - TI Klixon and alternative, amber Panaplex discharge display, uses 2x Eveready type 533 4.5v alkaline batteries. Photo Klixon keypad, photo alternative keypad.

Executron (Unitrex of Canada Ltd., Downsview, Ontario, Canada)

• 4M, 4 function, %, memory, red LED, 9v rep batt, 2.75 x 5.1", Hong Kong. - Label says, "Use Prinztronic ADX adapter", so some relationship with Prinztronic ? Photo
• 817D, scientific, green VFD, 2-AA rep. batt., Korea.
• 830, 4-function, %, blue VFD, 3-AA rep. batt.
• 833, 4-function, %, sq rt., VFD, 3-AA rep. batt., Korea.
• 892D, 4-function, sq rt., red LED, 3-AA batt, "made by Unitrex".
• 895D, 4-function, %, memory, VFD, 3-AA rep. batt., Korea.
• 899D, 4-function, %, sq rt., square, reciprocal, memory, green VFD.
• S874L, scientific, 8 digits mantissa & 2 digits exponent, red LED, 3-AA rep. batt., Korea.  Feb. 22.

Excelmate (European market calculator)

• 108 4-function, %, sq rt, green VFD, 2-AA rep batt, 3.0x5.5", Japan. Photo

expert

• Pocket Memory, 4-function, %, memory, red LED, 2-AA rep. batt.

EZY CALC

• EZY CALC, 4-function, blue VFD in separate tubes, battery-level meter.

 

F

Faber-Castell (German company. All models have a distinctive horizontal design, some with a slide-rule mounted on the rear.)

• Johann Faber 76, 4-function, %, memory, sq rt, square, reciprocal, red LED. Photo 1, photo 2.
• TR1, combined calculator and slide-rule. Featured calculator.
• TR1N, 4-function, %, memory, sq rt, square, reciprocal, red LED, 4- button cells, similar capability to TR1 but without the slide-rule.
• TR2, combined calculator and slide-rule, 4-function, %, memory, sq rt, square, reciprocal, red LED, 4- button cells.
• TR3, combined calculator and slide-rule, listed in book.
• TR4, identical to the TR3 but without the slide-rule.
• TRX, 4-function, %, memory, red LED, 2- AAA rep. batt.

FABIAN

• 800M, 4-function, %, memory, red LED.

Facit (Swedish calculator company)

• 1101, 4-funct, %, memory, red LED, 9V PP3 rep. batt., 2.8x5.8", unusual "bent-shape" design, Sweden. Photo.
• 1102, 4-funct, %, memory, red LED, 9V PP3 rep. batt., unusual "bent-shape" design, Sweden.
• 1106, similar to Sharp EL-805S. Photo. Featured calculator.
• 1111, similar to Sharp EL-8. Featured calculator.
• 1140, listed in book. Photo.

FACT (U.S. cigarette brand, launched in 1976 and discontinued in 1979)

• FACT, 4-function, %, memory, red LED, 9V rep. batt., Hong Kong, a "Standard type 1" model.

Falcon

• F600, listed in book.
• 3000, 4-function, %, memory, red LED, 9v PP3 rep. batt., Hong Kong, a "Standard type 1" model.

FactFinder (there is no information available about this company, if you have any information please get in touch)

• model 2000, 4-function, %, memory, sq. rt., red LED, 9v rep batt, 68x132x22mm / 2.7x5.2x0.9". Photo .

Farad

• 808, scientific, 8 digit green VFD, 2-AA rep. batt., Hong Kong.

Federal (Euro market)

• Compact, 4-function, %, sq rt, 8 digit green VFD, 2-AA rep batt, 74x128x20mm/3x5x0.75", Japan. Photo .
• F-I, 4-function, %, VFD, 2-AA rep. batt., 77x137x26mm/3x5.4x1", Japan. Photo.
• F-II, 4-function, %, sq rt, memory, VFD, 2-AA rep. batt, Japan.
• F-VI, scientific, 8-digits mantissa & 2-digits exponent blue VFD, 2-AA rep. batt, Japan.
• Memory, 4-function, %, mem, sq rt, 8 digit green VFD, 2-AA rep batt, 74x128x20mm/3x5x0.75", Japan. Photo .
• STUDENT, 4-function, %, sq rt, square, reciprocal, pi, memory, green VFD, 2-AA rep. batt.

Felix (made by ICE (Întreprinderea de Calculatoare Electronice - "the Electronic Calculator Plant"), Bucharest, Romania)

• CE 812, RPN scientific, 4-funct, %, sq rt, mem, red LED, 3x AA rep batt, c1974. Photo, rear, inside.
• CE 835, 4-funct, %, sq rt, mem, red LED, based on the National Semiconductor 835A. Photo.
• CE 845 "Mathematician", RPN scientific, red LED, 9v (PP3) rep batt, Romania, c1977/8. Made in Romania, it is based on the National Semiconductor 4510 "Mathematician", and the design may have been sold by Nat. Semi. when the company left the calculator market. Photo 1, photo 2.

FG Elektrogeraete (German company)

• Multiplus, 4-function, red LED, 5-AA batt., Germany.

Fi-Cord (Fi-Cord International, Didsbury, Manchester, England. British marketing company)

• MF 8, 4-function, red LED, England, re-badged Advance Mini Executive. Photo. Featured on British calculator site.
• ANITA 8011, 4-function, %, memory, similar to ANITA 811 but with green VFD, Fi-cord International Ltd., Yugoslavia, ~1977. Featured on British calculator site.
• ANITA 8031, 4-function, %, memory, square root, similar to ANITA 831 but with green VFD, Fi-cord International Ltd., Yugoslavia, ~1977. Featured on British calculator site.
• ANITA 8041, Scientific, similar to ANITA 841 but with green VFD, Fi-cord International Ltd., Yugoslavia, ~1977. Featured on British calculator site.

First

• First, 4-function, %, memory, square root, green VFD, 2-AA rep. batt., 77x127x20mm / 3.0x5.0x0.8", Japan. Photo .

Flight

• 880, 4-function, %, memory, red LED, 9v PP3 rep. batt., 74x134x24mm / 2.9x5.25x0.9", Hong Kong, a "standard type 2" calculator. Photo.

Ford Motor Credit Company Ltd.

• Fiesta (aka model 811DB), 4-function, %, memory, sq rt., square, green VFD, 2-AA rep batt., 85x157x24mm / 3.3x6.2x0.9", the Fiesta is a type of Ford car, has a "Broughtons of Bristol" label on back (this company acquired the Busicom name in the mid 1970s, so this is probably a re-labelled Busicom 811DB). Photo.

Fords

• 82M, 4-function, %, memory, red LED, 4-AA rep. batt.
• SC85M, scientific, green VFD, 4-AA rep. batt.
• SC88M, scientific, green VFD.

Formac

• DT-118, 4-function, %, memory, blue VFD, 2-D rep. batt., Taiwan.
• EC-1000, 4-function, %, memory, blue VFD, 2-D rep. batt.

Franz Grigelat

• No model number, 4-function, red LED, 5-AA rep. batt., Germany, self-assembly calculator kit.

Friden (See Singer)

FUJI MAX (FUJISHO JIMUKI CO., LTD., JAPAN)

• 80M, 4-function, blue VFD with separate tubes, Japan, similar to Tealtronic K-80M type 1.

FURUKAWA ELECTRIC

• CITIZEN Carry 90M, 4-function, %, memory, green VFD, 2-AA rep. batt., a Citizen Carry 90M with a FURUKAWA ELECTRIC badge on the front.

 

G

Galfa (Galleries Lafayette, department store in Paris, France)

• 81/3, 4-function, %, memory, square root, green VFD, 3-AA rep. batt., 76x153x23mm / 3.0x6.0x0.9", made by Rockwell, similar to 24RD II, Japan. Photo.

Geeta

• 3000, similar to Bohsei 3000. Photo.  See also the "Standard Type 1 Calculator" page. Featured calculator.

Geller (Geller (Business Equipment) Ltd., UK marketing company)

• Teal LE-8, 4 function, red LED, 6-AA rep batt, 74x142x31mm / 2.9x5.6x1.2", c1972, Japan, a Teal LE-8 "President" labelled with the Geller name. Photo.

Gemini (Made by Newlyn Electronics, Penzance, U.K. There appears to have been a connection between this company and Emihus Microcomponents Ltd. If you have any information about this please get in touch.)

• 1, 4 functions, %, red LED, 3-N rep. batt., 70x122x25mm / 2.8x4.8x1.0", U.K. Featured on British calculator site.
• 1B, 4 functions, %, red LED, 3-N rep. batt., 70x122x25mm / 2.8x4.8x1.0", U.K. Featured on British calculator site.
• 2, 4-function, memory, %, red LED, 3-N rep. batt., 70x122x25mm / 2.8x4.8x1.0", U.K., c1975. Featured on British calculator site.
• 3, Scientific, red LED, 3-N rep. batt., 70x122x25mm / 2.8x4.8x1.0", U.K., c1975. Featured on British calculator site.

General (General/Teknika) (The General Corporation, Kawasaki, Japan. Marketed in Europe)

• 804, 4-function, green VFD in separate tubes, sealed rech. batt., Japan, recharges when mounted on the BC-804 recharging unit.
• 806 aka EDC-806, 4-function, VFD, 4-AA rep batt, Japan.
• 807 aka EDC-807, 4-function, %, square root, green VFD, 3-AA rep batt, Japan.
• 812 aka EDC-812, 4-function, %, square root, memory, red LED, 3-AA rep batt, 2.75x5.0", Japan. Photo.
• 812A, 4-function, %, square root, memory, green VFD, 3-AA rep batt., Japan.
• 8103, 4-function, %, square root, memory, green VFD, 2-AA rep batt., Japan.

General Electric (GE) (Sold by Australian General Electric (Appliances) Pty. Limited. Most are similar to Omron models.)

• Genius 50, 4-funct, %, blue VFD, 1975, Japan.
• Genius 60, 4-funct, blue VFD, 4-AA rep. batt., Japan.
• Genius 62, 4-funct, %, sq rt, blue-green VFD, 75x130x20mm / 3x5.25x0.75", 1975.
• Genius 63 aka CE 63, 4-funct, sq rt., blue VFD, Japan.
• Genius 70, 4-funct, %, mem, blue-green VFD, 2-AA rep batt, 80x150mm / 3.25x6.0", 1975, Japan/Singapore, similar to an Omron model. Photo.
• Genius 71, 4-funct, %, etc., blue VFD.
• Genius 74, 4-funct, %, mem, sq. rt., square, reciprocal, blue-green VFD.
• Genius 77, 4-funct, %, mem, sq. rt., yellow screen LCD, (early LCD model included for completeness).
• Genius 80 aka CE 80, 1975.
• Genius 85, aka CE 85 , scientific, 8 digit mantissa & 2 digit exponent, VFD. Photo.
• Genius 90 aka CE 90, scientific, blue VFD, 2-AA rep batt, Japan.
• Genius 91 aka CE 91, scientific, blue VFD, 2-AA rep batt, Japan.
• Genius 100 aka LC 100, 4-funct, %, mem, sq. rt., yellow screen LCD, 2x button cell, Japan, (early LCD model included for completeness).
• mini aka CE 30, scientific, blue VFD, Japan.
• Scientific aka CE 92, 4-function, %, square root, VFD, Japan.
• Scientific 90 aka CE 90, scientific, blue VFD, 2-AA rep batt, Japan.

General Instrument (Canadian company)

• EZ-2000, listed in book. Photo.
• EZ-3000, listed in book (9v rep batt). Photo.
• EZ-3100, listed in book.
• EZ-3200, 3-function, %, red LED.
• EZ-3500, scientific, red LED, 9v PP3 rep. batt.

Genesonic

• 707, 4-function, %, square root, memory, red KED, 2-AA rep. batt., Hong Kong.  Jan. 23.
• 3683, 4-function, %, red LED.
• A500, 4-function, %, square root, square, reciprocal, memory, green VFD, 2-AA rep. batt., Hong Kong.
• A501, 4-function, %, square root, square, reciprocal, memory, green VFD, 2-AA rep. batt., Hong Kong.
• a595, 4-function, %, memory.

GENIE (May be the model designation rather than a company)

• GENIE-II, 4-function, blue VFD in separate tubes, sealed rechargeable batteries, similar to RES MARK IX.

Gillette (U.S. company)

• PC-1, listed in book. Featured on British calculator site .

Ginza

• Ginza, 4 function, %, memory, red LED, 9v rep batt, 2.8x5.2", Hong Kong, gray colored, has some resemblance to Bohsei 3000 and Texet 880, ~1979. Photo.

Glentex

• 80d, 4 function, %, green VFD, 4-AA rep batt, 86x140x26mm / 3.9x5.5x1.0", Japan. Photo.

GMO

• 380, scientific, green VFD, 2-AA rep. bat.

GOLDSMITH BROS.

• PILOT 8, 4-function, red LED, Mexico.

Goodyear

• G191, 4-function, memory, %, red LED, Goodyear tyres promotional item. Photo. Is a version of the "Standard Type 1 Calculator".

GPM

• 25, 4-function, %, square root, square, reciprocal, memory, blue VFD, Singapore.

Gracia

• Gracia, 4-function, memory, %, red LED. Is a version of the "Standard Type 1 Calculator".

Grandstand

• 4 in 1 ELECTRONIC COMPUTER GAME, 4 function, memory, games (Grand Prix, Code Breaker, Blackjack), 10 digit red LED, 5-AA rep batt, 87x159x42mm / 3.4x6.3x1.7", Hong Kong,  ~1979. Photo.

Great (NEC (Nippon Electric Company), Japan)

• HM-80D, 4 function, memory, green VFD, 4-AA rep batt, 85x135x26mm / 3.3x5.3x1.0", Japan,  ~1979, similar to Ruby HM-80D. Photo.

GREGORY (GREGORY Corporation, Osaka, Japan)

• M-801, 4 function, memory, blue VFD in separate tubes, 4-AA rep batt., Japan.

Gross (Brighton, England)

• 681, 4 function, %, memory, blue VFD, 4-AA rep batt, 80x146x26mm / 3.1x5.75x1.0", Assembled in Mexico (manufactured by Rockwell and labelled for Gross). Featured on British calculator site.

 

H

hamata

• f-84, 4-function, %, square root, reciprocal, red LED.

Hanimex (Australian based company.  On one calculator label it says "Hanimex Group Companies: Australia, Canada, Hong Kong, Japan, New Zealand, U.K., U.S.A., West Germany".)

• 08L, 4-function, green VFD, c1973. Photo, in carry case.
• 100M "flip-vue", 4-function, %, memory, unique flip-up red LED display.
• 202, listed in book. Photo.
• 205 aka Calculator-Recorder, listed in book. Featured calculator.
• 216, 4-function, %, memory, red LED, 2-AA rep. batt., Hong Kong.
• 232, 4-function, %, sq rt, red LED, 9v PP3 rep. batt., Hong Kong.
• 301, 4-function, red LED, 9v PP3 rep. batt., Hong Kong.
• 305, listed in book. Photo.
• 595, 4-function, %, memory, green VFD, 2-AA rep. batt., Hong Kong.
• 805, 4-function, %, red LED, 2-AA rep. batt. Photo.
• 807, listed in book.
• 811, listed in book.
• 830M, 4-funct, %, memory, square root, green fluorescent, 1- AA rep batt, 3.0x4.7", Korea, c1980. Photo .
• 1013, scientific, green VFD, 2-AA rep. batt., Hong Kong.
• 1640, listed in book.
• 1226T, 4-function, %, memory, 12-digit blue VFD, 4-AA rechargeable batteries, printer, Japan.
• 2103, 4-function, %, memory, green VFD, 2-AA rep. batt.
• 2105, 4-function, %, green VFD, 2-AA rep. batt.
• 2110 "FINANCIER", financial, green VFD, 2-AA batt.
• 2150, 4-function, %, square root, square, reciprocal, memory, green VFD, 2-AA rep. batt., Hong Kong.
• 2170, listed in book.
• BC80, 4 function, red LED, 2-AA rep. batt., Hong Kong.  Feb. 22.
• BC81, 4 function, red LED, PP3 rep. batt., 77x147x32mm / 3.0x5.8x1.3", c1972, "Klixon" keypad. Photo , inside.
• BC348, 4 function, %, square root, memory, blue VFD, 2-AA rep. batt., Singapore.
• BC 802, 4 function, square root, square, red LED, 2-AA rep. batt., Singapore.
• BC806, 4 function, 6-AA rep. batt., 87x155x34mm / 3.4x6.1x1.3", Hong Kong. Photo.
• BC807, 4 function, %, green VFD, 4x AA rech. batt., 80x137x31mm / 3.1x5.4x1.2", Hong Kong. Photo .
• BC 808, 4 function, %, red LED, 3-N rep. batt., 71x122x25mm / 2.8x4.8x1", c1973, U.K. Photo .
• BC 812, 4 function, red LED, 2-AA rep. batt., Hong Kong.
• BC 820, 4 function, green VFD, 4-AA rep. batt., 90x160x36mm / 3.5x6.3x1.4", c1973, Japan. Photo , inside.
• BC 821, 4 function, %, square root, green VFD, 4-AA rep. batt., Japan.
• BC900, 4 function, %, green VFD, 4-AA rep. batt., 81x135x25mm / 3.2x5.3x1.0", c1975. Photo .
• BC-900B, listed in book.
• BC8070, 4 function, %, square root, green VFD, 2-AA rep. batt., Hong Kong.
• BCF 99, 4-funct, %, red LED, PP3 rep. batt.
• BCM-19V, listed in book.
• BCM-30, listed in book.
• BCM-99, 4-funct, %, memory, green VFD, PP3 rep. batt, 127x72x22mm / 5.0x2.8x0.9". Photo.
• BCM-99, 4-funct, %, memory, green VFD, PP3 rep. batt, 127x72x22mm / 5.0x2.8x0.9". Photo.
• BCM368, 4-function, %, square root, reciprocal, green VFD, 2-AA rep. batt., Singapore.
• BCM378, 4-function, %, square root, reciprocal, VFD, 2-AA rep. batt., Singapore.
• BCM-817, listed in book. Photo.
• BCM-818 (type 1), listed in book.
• BCM-818 (type 2), 4 function, %, memory, sq rt., green VFD, 4-AA rep batt. Photo.
• BCM821, 4 function, %, memory, sq rt., green VFD, 4-AA rep batt, Japan. Photo.
• BCM850, 4 function, %, memory, blue VFD, 4-AA rep. batt., Hong Kong.
• BCM901, 4 function, %, memory, green VFD.
• BCM901S, 4 function, %, memory, green VFD, 2-AA rep. batt.
• BCM8181, 4 function, %, memory, square root, Hong Kong. Photo.
• CM-401, listed in book.
• ESF-101, listed in book. Photo.
• ESR10, scientific, red LED, 2-AA rep. batt., Hong Kong.
• ESR-90, 4-function, %, square, square root, memory, green VFD, 4- AA rep. batt, 82x135x25mm / 3.2x5.3x1.0", c1976, Hong Kong. Photo.
• ESR 100, scientific, green VFD.
• ESR388, 4-function, %, square, square root, reciprocal, pi, memory, VFD.
• ESR800, 4-function, %, square, square root, memory, green VFD.
• ESR1000, scientific, blue VFD.
• ESR1010SN, scientific, green VFD, 4-AA rep. batt.
• L88D, 4-function, %, memory, red LED, 9v PP3 rep. batt., Hong Kong, a 'Standard type 2' calculator.
• L500, 4-function, %, square root, square, memory, red LED, 9v PP3 rep. batt., Hong Kong.
• L600, 4-function, %, square root, memory, blue VFD, 2-AA rep. batt., Hong Kong.
• SL90, 4-function, %, green VFD, 4- AAA. rep batt., 70x120x21mm / 2.75x4.75x0.8", Hong Kong. Photo .
• Supermaster, scientific, 8-digits mantissa & 2-digits exponent blue VFD, 2-AA rep. batt., Hong Kong.
• tabulex 666, 4-function, red LED, membrane keyboard, similar to Tabulex 666.
• TDP850, 4-function, %, green VFD, printer, 4- C rep. batt., Hong Kong.
• TP750, listed in book.
• VP8, 4-function, %, red LED, 2-AA rep batt, Hong Kong.
• VP8M, 4-function, mem, red LED, 2-AA rep batt, Hong Kong.
• VP8SL, 4-function, %, square root, square, memory, red LED, 2-AA rep. batt.

Hanomat

• Hanomat, 4-funct, memory, red LED, PP3 rep batt, 67x112x23mm / 2.6x4.4x0.9", Hong Kong, c1980. Photo .

Hapco (Hapco Inc., Boulder, Colardo, U.S.A.)

• Porta Mark II, listed in book. Featured calculator. Photo.

Harden (Harden S.P.A, Italy).

• BSR 04, 4-function, %, square root, reciprocal, memory, blue VFD, 4-AA rep. batt., Mexico, similar to Rockwell models.
• ESR/06, scientific, blue VFD, 4-AA rep. batt., Mexico, a Rockwell 61R with different design casing.

Hardy

• 8MS, 4-function, %, memory, sq rt., green VFD, 130x77x34mm / 5.1x3.0x1.3". Photo.

Harvard

• 606 , 4-function, red LED, 9v PP3 rep. batt.
• Calculator-Recorder, 4-function, %, memory, sq rt., green VFD, combined calculator and mini cassette recorder, similar to Hanimex Calculator-Recorder.
• GRADUATE H-300 , scientific, red LED.
• Mini 501, 4-function, %, red LED, 3-AA rep. batt., 75x144x24mm / 3.0x5.7x0.9", Korea. Photo .
• STUDENT H-303 , 4-function, %, memory, red LED, 9v PP3 rep. batt., Hong Kong.

Hatra

• Hatra, 4-function, blue VFD individual tubes, 4-C rep. batt., Japan, similar to the Tealtronic K-80M, and similar to the TEAL K-80M but without the battery condition meter. Photo.

Heathkit (U.S. company, calculators assembled from kits)

• IC-2006, listed in book.
• IC-2009, listed in book. Featured calculator.
• OC-1401 Aircraft Navigation Computer, aircraft navigation functions, red LED, U.S.A. Featured calculator.

Helec

• GT 530 "tip-in", 4-function, red LED.
• GT 535 "tip-in", 4-function, red LED.
• GT 537 "tip-in", 4-function, square root, red LED.
• GT 539 "tip-in", 4-function, %, memory, red LED, W. Germany.

Hermes (Hermes Precisa International, Zurich, Switzerland)

• 811, 4-function, %, memory, blue VFD, 5-AA rep. batt., Taiwan.
• 4001, 4-function, %, memory, 12-digits blue VFD & printer, sealed rechargeable battery, Japan.
• ADMINISTRATOR, 4-function, %, memory, red LED, Hong Kong.

HERRNBÖCK

• CO 842D, 4-function, %, blue VFD, 2-AA rep. batt.

Hetronic

• 802, 4-function, red LED, 9v PP3 rep. batt.
• SR98, scientific, blue VFD, 2-AA rep. batt.

Hewlett-Packard (U.S. company) (there are details of all vintage Hewlett Packard calculators at www.hpmuseum.org)

• 01, listed in book. Photo
• 10, listed in book. Photo
• 19C, listed in book.
• 21, listed in book.
• 22, listed in book.
• 25, listed in book. Photo
• 25C, listed in book. Photo
• 27, listed in book. Photo
• 29C, listed in book.
• 31E, listed in book.
• 32E, listed in book.
• 33C, listed in book.
• 33E, listed in book.
• 34C, listed in book.
• 35, listed in book. Featured calculator.
• 37E, listed in book.
• 38C, listed in book.
• 38E, listed in book.
• 45, listed in book. Photo
• 55, listed in book.
• 65, listed in book. Featured calculator.
• 67, listed in book.
• 70, listed in book. Photo
• 80, listed in book. Featured Calculator.
• 91, listed in book.
• 92, listed in book.
• 97, listed in book.
• 97S, listed in book.

Hiradastechnika SzovetKezet (Hungarian company)

• K-106 P, 4-function, %, 10-digits red display, Hungary, a version of the Bowmar MX-80 made in Hungary, "LICENCE: BOWMAR CANADA".
• K-832, 4-function, %, red LED, Hungary, a version of the Bowmar MX-55 made in Hungary, "LICENC: BOWMAR CANADA".
• K-841, 4-function, %, memory, red LED, 4-AA rep. batt., Hungary.
• Hiradastechnika version of Bowmar MX-55. Featured Calculator.
• PTK-1072, scientific, programmable, 8+2 red LED, 3-AA rep. batt., 158x77x27mm, Hungary. Photo.
• PTK-1050, scientific, 8-digits mantissa & 2-digits exponent red LED, Hungary, a version of the Texas Instruments TI-57 made in Hungary.
• PTK-1096, scientific, programmable, 8+2 red LED, 3-AA rep. batt., Hungary, a version of the Texas Instruments TI-59 made in Hungary.
• TK-1023, scientific, red LED, sealed rech. batt., Hungary, rebadged National Semiconductor 4520 Scientist.
• TK-1024, scientific, red LED, sealed rech. batt., Hungary, rebadged National Semiconductor 4640.
• TK-891-1 Scientist, scientific, red LED, sealed rech. batt., Hungary, rebadged National Semiconductor calculator.
• TK-1072, scientific programmable, red LED, sealed rech. batt., rebadged National Semiconductor 4520, apparently some examples have non-programmable electronics and the program function buttons are not labelled and are inoperative.

Hitachi (Japanese company)

• KK 181B, 4-function, blue fluorescent, 5- AA rechargeable batt, battery level meter, flip-up display cover, 4.0x7.0", Japan, ~1972. Photo.
• KK221B, 4-funct, %, 8-digit fluor, 4-AA rech batt pack, 112x167x37mm / 4.4x6.6x1.5", Japan. Similar to Singer Friden 1200. Photo1 Photo2.

Homeland (Marketed by Toshiba Business Machine Co., Ltd., a company in the Toshiba group.)

• 800, 4 function, %, green VFD, 4-AA rep. batt., Japan.
• 801, 4 function, %, sq rt, green VFD, 2-AA rep. batt.,147x75mm / 5.8x3.0", Japan. Photo.
• 807, 4 function, %, sq rt, green VFD, 2-AA rep. batt., 152x75mm / 6.0x3.0", Japan. Photo.
• 810, 4 function, %, memory, square root, green fluorescent, 4-AA rep batt, 3.3x5.3", Made in Japan (Toshiba Business Mashine (sic) Co., Ltd.). Photo.
• 812X, scientific, blue VFD, 2-AA rep. batt., Japan.
• 8002R, 4 function, %, square root, green VFD, 2-AA rep. batt., Japan.
• 8006, listed in book. Photo.
• 8007, 4 function, %, square root, green VFD.
• 8008, 4-function, %, π, sq. rt., change sign, green VFD, 2-AA rep. batt., 122x79x21mm / 4.8x3.1x0.8", Japan. Photo.
• 8009, 4 function, %, square root, green VFD, 2-AA rep batt, 3.2x5.3", Japan. Photo.
• 8101, 4 function, %, memory, green VFD.
• 8102, 4 function, %, square root, memory, green VFD, Japan, rear label marked "TEAL".
• 8105, 4 function, %, square root, memory, green VFD, 2-AA rep. batt., Japan.
• 8108, 4 function, %, square root, memory, blue VFD.
• 8109, 4 function, %, square root, green VFD.
• 8110, 4 function, %, square root, memory, blue VFD, 2-AA rep. batt., Japan.
• 8112, 4 function, %, memory, green VFD, 2-AA rep. batt., Japan.

Hornet (Great Wall Electronic Co., Taiwan. Sold in European market.)#

• mini 810, 4 function, red LED, 9v PP3 rep. batt., 74x119x23mm / 2.9x4.7x0.9", Taiwan. Photo .
• mini 816, 4 function, %, mem, red LED, 9v PP3 rep. batt., 74x119x23mm / 2.9x4.7x0.9", Taiwan. Photo.
• SR-12, 4-function, %, square root, memory, blue VFD, PP3 9v rep. batt.
• SR-22, 4-function, %, square root, memory, blue VFD, PP3 9v rep. batt., Taiwan.
• SR-30, scientific, green VFD, 4-AA rep. batt., c1975, Taiwan. Photo.
• SR-40, scientific, 10-digits mantissa & 2-digits exponent red LED, 3-AA rep. batt.

House of Fraser (British company - used stag head logo.  All calculators made by Rockwell.)

• 8F. Featured on British calculator site.
• 14HF. Featured on British calculator site .
• 18F. Featured on British calculator site .
• 24HF. Featured on British calculator site .
• 30F. Featured on British calculator site .
• 44HF. Featured on British calculator site .
• 64HF. Featured on British calculator site .

HTH

• 830D, 4-function, %, square root, green VFD.
• 830MD, 4-function, %, square root, memory, green VFD, 1-AA rep. batt., "Manufactured by DETRON CO.".

Hughes Aircraft (U.S. company)

• Calculator Watch, listed in book, similar to Compuchron calculator watch.

Hugin (European market calculator)

• counter aka 977-8092, 4-function, %, blue VFD, 2-AA rep. batt.
• exponent aka 977-8099, scientific, 8 digits mantissa & 2 digits exponent green VFD, 2-AA rep. batt.
• Memory, 4-function, %, mem, sq rt, green VFD, 2-AA rep. batt., 3.0x5.5", similar to Toho Roger series, Japan.
• Modell 80, 4-function, %, green VFD, 4-AA rep. batt., 3.0x5.5", similar to Toho Roger series, Japan.
• private, 4-function, %, green VFD.

hunor - See EMG

 

 

I

Iain Jones International (Logo is 'iji'.  Atlanta, Georgia, U.S.A.  The operating manual for the Mini says "American made for international trade".)

• Addison Mini A, 4-funct, red LED, PP3 rech. batt, Klixon keypad, 80x149x28mm / 3.1x5.9x1.1", U.S.A., c1972/3. This calculator features in the "One Hit Wonders" article.
• Mini, listed in book. This calculator features in the "One Hit Wonders" article.
• Mini A, 4-funct, red LED. This calculator features in the "One Hit Wonders" article.
• Phoenix, listed in book.
• Phoenix 101, 4-function, rech. batt. This calculator features in the "One Hit Wonders" article.
• Phoenix/B, 4-function, rech. batt. This calculator features in the "One Hit Wonders" article.
• Printer, 4-funct, printer only, rech. batt.

Ibico

• 045, 4-function, %, square root, memory, blue VFD, 2-AA rep. batt.  Jan. 23.
• 066, 4-function, 4-AA rep. batt., Japan.  Jan. 23.
• 076, 4 function, %, mem, sq rt, green VFD, 4- AAA rep batt, Japan.
• 083, listed in book. Photo.
• 084, 4-function, %, square root, pi, green VFD, 4-AA rep. batt., Japan.
• 085, 4 function, %, mem, green VFD, 4-AA rep batt, 89x135x30mm / 3.5x5.3x1.2". Photo (calculator in rough condition).
• 086, listed in book. Photo.
• 088 type 1, listed in book. Photo.
• 088 type 2, 4 function, %, memory, sq rt, square, green fluorescent, 2-AA rep batt, 84x133x30mm / 3.3x5.3x1.2", Japan. Photo.
• 0832, 4 function, %.
• 095, scientific, green VFD, 4-AA rep batt.

ICE

• Travelmate RS-11, 4-functions, %, green VFD.
• Travelmate RS-16, 4-functions, %, ??, green VFD.

ICP (International Consumer Products Ltd., New York, U.S.A.)

• 504, listed in book. Photo.
• 505, 4 function, red LED, 9v PP3 rep. batt., Taiwan.
• 525, 4 function, %, memory, red LED, 4-AA rep. batt., Taiwan. Photo.
• 530, listed in book.
• 537, listed in book.

IEE

• Universal 202, 4-functions, %, memory, red LED, 9v PP3 rep. batt, Singapore.

IME (Industria Macchine Elettroniche, Italian company)

• minIME2, 4 function, red LED, 5- AA rep batt, 80x147x27mm / 3.1x5.8x1.1", Italy. Photo, inside.
• minIME5, 4 function, %, memory, red LED, 9v (PP3) rep batt, 67x125x23mm / 2.6x4.9x0.9", Singapore. Photo.

Imperial (Originally Imperial Typewriter Company, England, later Imperial Business Equipment Ltd., was a division of Litton Industries.  Calculators similar to Royal and Triumph-Adler models.)

• 8MK-AD, 4 function, %, square root, memory, 4-C rep. batt., Japan.
• 8 S, 4 function, %, square root, green VFD.
• 12HC, 4 function, %, square root, memory, green VFD, 4-AA rep. batt., Japan.
• 12HT, scientific, green VFD, 4- AA rep batt, 85x150x27mm / 3.3x5.9x1.1", Japan. Featured on British calculator site.
• 80CS (aka EC 40). Featured on British calculator site .
• 81CS.  Featured on British calculator site .
• 81M, 4 function, %, memory, green fluor, 3- AAA rep batt, 2.5x3.75", Japan, identical to Royal 81M except for "Imperial" logo. Photo. Featured on British calculator site .
• 81SR, scientific, green fluor, 3- AAA rep batt, 65x95x23mm / 2.5x3.75x0.9", Japan. Photo . Featured on British calculator site.
• 90K, listed in book. Featured on British calculator site .
• 90S, 4 function, %, memory, square root, Pi, green fluor, 4- AAA rep batt, 3.0x4.75", Japan, identical to Royal 90S except for "Imperial" logo. Photo. Featured on British calculator site.
• 91K, 4 function, %, memory, green fluor, 4- AAA rep batt, 3.0x4.75", Japan, identical to Royal 91K except for "Imperial" logo. Photo. Featured on British calculator site .
• 91S, 4 function, %, memory, square root, green fluorescent, 4-AAA rep batt, Japan, (similar to Adler 81S). Photo. Featured on British calculator site.
• 92M, 4 function, metric conversion, green fluorescent, 4-AAA rep batt, Japan. Photo. Featured on British calculator site.
• 94F, 4 function, square root, financial, green fluorescent, 4-AAA rep batt, 74x120x22mm / 2.9x4.7x0.9", Japan. Photo. Featured on British calculator site.
• 99T, 4 funct, limited scientific, 4- AAA rep batt, 74x120x20mm / 2.9x4.75x0.75". Photo . Featured on British calculator site.
• 1010.  Featured on British calculator site .
• 1020.  Featured on British calculator site .
• 1030.  Featured on British calculator site .
• Companion.  Featured on British calculator site .
• L1019, 4 function, %, memory, small desktop format.
• I.C.-90 (stylus version), 4 function, red LED, sealed rech. batt., uses stylus for keyboard entries, similar to the Royal Digital IV.  Featured on British calculator site   Feb. 22.
• Special.  Featured on British calculator site .

Ingersoll

• Memory Master, 4 function, %, memory, red LED, 4 x button cells, 61x113x14mm / 2.4x4.4x0.55", Hong kong. Small and thin. Photo.

Instru (marketed by Instrumentariun Oy, Finland)

• ALPHA, 4-function, %, memory, square root, green fluorescent, 4- AA rep batt, 3.5x5.5", Japan, ~1975. Photo .

intelec

• Executive 007, 4 function, %, square root, memory, VFD, sealed rechargeable battery, Taiwan.

International Calculator Corporation

• ADMINISTRATOR I, 4 function, %, red LED, 4 x button cells, 2.4x4.4x0.55", Hong kong. Small and thin, has membrane keyboard. Photo.
• ADMINISTRATOR IV, 4 function, %, red LED, 4 x button cells.  Jan. 23.
• ADMINISTRATOR V, 4 function, %, memory, red LED.

Internationale Warenhausgruppe (International Warehouse Group, German company)

• Junior Master 7601, 4 function, %, memory, red LED, 9v PP3 rep. batt., Japan.
• MR800, 4 function, %, memory, sq rt., green VFD, 3-AA rep. batt., Japan. Photo.

Interton (German company, most calculators made in Germany).

• CB 1020, 4-functions, %, square root, square, reciprocal,  memory, green VFD.
• PC 2008, 4-functions, red LED, 4-AA rep. batt.
• PC 2010, 4-functions, red LED.
• PC-4008, 4-functions, red LED.
• PC-4007, 4-functions, red LED, Germany. Photo.
• PC-4010, listed in book. Photo.
• PC-4018, 4-functions, %, memory, red LED, 9v PP3 rep. batt., Germany.
• PC-4019, 4-functions, %, square root, square, reciprocal, memory, red LED.
• PC-4020, 4-functions, %, square root, memory, green VFD. Photo.
• PC-4030, scientific, green VFD.
• PC-5030, scientific, green VFD, 4-AAA rep. batt.  Jan. 23.
• PC-6010, 4-functions, %, square root, square, reciprocal, memory, VFD, sealed rechargeable 3-button cells.
• Electronic PC 5009, 4 function, %, red LED, 4-AAA rep batt, 2.3x4.4", country of manufacture unknown, ~1975, similar case to PC 5019.
• Electronic PC 5019, 4 function, %, memory, square root, red LED, 4-AAA rep batt, 2.3x4.4", country of manufacture unknown, ~1975, similar case to PC 5009.
• Sensor 9, named after the unusal touch-sensor on/off switch, 4 function, %, green VFD, 9v (PP3 rep batt), 80x130x23mm / 3.1x5.1x0.9". Photo.
• VIP 10, 4 function, 10 digits red LED, 4-button cells, ~1976. Photo1, Photo2.
• Electronic (model number not known), 4 function, %, red LED, country of manufacture unknown. Photo .
• Electronic (model number not known), 4 function, %, memory, square root, red LED, 4-AAA rep batt, 2.3x4.4", country of manufacture unknown, ~1975. Photo.

Intertronic

• mini 8, 4-functions, %, red LED.  Feb. 22.

Invicta (British company)

• Electronic Mastermind, game, listed in book. Featured on British calculator site .
• Supersonic Electronic Mastermind. Featured on British calculator site .

ISAM

• HM-80D, 4-function, %, memory, blue VFD, 4-AA rep. batt., Japan.

I.T.C. (No information available about this company, if you have any information please get in touch)

• F-80DX, Financial, blue VFD, 4-AA rep. batt., 85x135x27mm / 3.5x5.3x1.1", Japan. Photo.

ITT (International Telephone & Telegraph, U.S. company)

• S-Trainer, listed in book. Photo.

 

 

Click to go to :
Calculator Book Addendum A-B
Calculator Book Addendum C-D
Calculator Book Addendum J-O
Calculator Book Addendum P-R
Calculator Book Addendum S
Calculator Book Addendum T-Z

 

Key to Abbreviations

Functions:
4-funct = 4 basic mathematical functions (addition, subtraction, multiplication, division)
sci-funct = scientific or engineering functions (logarithmic and trigonometric functions such as log, sine, and cosine and usually memory, square, pi, etc.)
mem = memory
% = percent function
exp = exponent
paren = parentheses
pi = pi value
recip = reciprocal
sgn chg = sign change
sq rt = square root
sq funct = square functions (including square and square root)

Battery Type:
button rep batt = very small, disk-shaped, replaceable batteries commonly termed button-types, used mainly in LCD models.
rep batt = replaceable batteries (such as 9V, AA, C, and N batteries)
rep batt pack = replaceable batteries in a removable pack
sealed batt = rechargeable batteries sealed in the case
sealed batt pack = rechargeable batteries in a removable pack

Display Type:
See the section on Calculator Displays for more detailed information.
Displays have 8 digits unless specified otherwise.

COS-LCD = Early Liquid Crystal Display from Sharp showing silver digits on a dark background. COS stands for Crystal on Substrate. This display was used as early as October 1973 but eventually was phased out.
fluor = see VFD.
Gas discharge = Display containing all digits sealed in a single package employing  gas discharge to generate light in the same way as a neon lamp. Normally give amber- or orange-colored digits, and typified by the Panaplex® used by a few calculator manufacturers.
LCD = Liquid Crystal Display, a flat, gray-digit type of display type that uses less power and was embraced by calculator makers by the end of the 1970s. Early versions (used in the early 1970s) by Rockwell and Sharp are included in this guide.
LED = Light Emitting Diode display (usually red although sometimes a purple filter was used to color the display). LEDs often have small half bubble-like covers over the digits. tube or mini-tube = separate vacuum or fluorescent tube for each digit of display.
Yellow LCD = Early LCDs had a reliability problem with ultra-violet light and manufacturers used a yellow-colored filter over the normally gray display to remedy that. Refinements in later LCD designs removed the need for the filter.
VFD = Vacuum Fluorescent Display. Display containing all digits sealed in a single tube generating light from an electrical discharge onto a fluorescent material. The color of the digits is normally green or blue, or somewhere in between.

Other Information:
Klixon keypad = Texas Instruments Klixon® keypad was one of the earliest keypads and used greatly by Bowmar and a few other early calculator makers. It had the four basic functions and used metal key pads about 1/2" square.
Japan (for example) = country of manufacture as stated on calculator
RPN = Reverse Polish Notation, a method of calculating and user data entry used by HP calculators. A few other manufacturers also used RPN in more limited scale.
"aka" (also known as) is used when there is another name or model variation on the calculator.
"c" (for example, c1973) is used as "circa," denoting at approximately that time.

 

A big thanks to Thomas Brockmeier, Richard Brooks, Andrew Davie, Larry Gilbert, Niels Grot, Palmer Hanson, Steve Haynes, Robert King, Kent King, Jeff Lane, Philippe Leckler, Ken Meine, Bob Patton, James Redin, and CB Wilson for their help.

 

How to Buy the Book!!!!

Collector's Guide to Pocket Calculators

by Guy Ball and Bruce Flamm

This 204 page, softcover book is the world's most comprehensive listing of electronic pocket calculators from the 1970's, the so-called Golden Age of Pocket Calculators.  Over 1,500 known calculators are detailed with information on features, size, display type, power type, and pricing.  In addition, when known, the listing also contains date of sales, original pricing, and country of origin information.

The book features over 470 photographs of various models from over 240 manufacturers around the world (including calculators from lesser-known companies in England, Switzerland, Netherlands, Spain, Germany, Bulgaria, and Russia).

"The Collector's Guide to Pocket Calculators" includes a comprehensive value guide to help you gauge rarity and desirability of the various models -- especially as they relate to each other.

The book can be purchased for $20.00 plus $5 for USA mailing ($10 for first class mailing to Canada, and $23 to other countries).  California residents please add $1.86 state sales tax.

For payment by PayPal, or for additional details and information, contact co-author Guy Ball.  Guy is happy to sign the books if asked.

 

Copyright ©1997 Guy Ball and Bruce Flamm, ©2002-2023 Nigel Tout

Vintage Calculators

© Text & photographs copyright Nigel Tout   2000-2023  except where noted otherwise.