Hand-held Calculators

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Brother PRO-CAL 408
Brother PRO-CAL 408

Brother PRO-CAL 408

Distinctive features: One of the first hand-held, battery powered calculators.

Technical details:
Display is 8 digits, individual green fluorescent tubes.

Four-function.

6.0v rechargeable battery.

102 mm x 172 mm x 53 mm. (4" x 6.75" x 2.1").

Introduced 1971.

Made in Japan.
Inside Brother PRO-CAL 408

The rear cover has been removed to show the circuit board assembly.

Hand-holdable, but definitely not a pocket calculator.
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Hand-held Calculators
TI Cal-Tech
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Minolta Minolcom
Brother PRO-CAL 408
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Olympia CD 81
apf Mark V
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Iain Jones International Mini A
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Litronix Checkmate
Heathkit IC-2009
MITS 150
Summit Ko9V, K16 & SE88M
Unicom 102
Victor 85 "Tallymate"
Elka 101
RFT minirex 75
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Sharp EL-805
Bowmar MX-55
Atlas-Rand, Berkey, & Keystone
Hewlett-Packard HP-65
Casio fx-10
Calcu-pen
Casio AL-8 & family models
Commodore 776M & 796M
Novus 650 "Mathbox"
Rockwell 8R
General Instrument EZ3000
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Monte Carlo
Texas Instruments Spirit of '76
Pulsar Calculator Watch
Compuchron Calculator Watch
Adler Lady & Sir
Elektronika B3-18A & C3-15
Speech+
Commodore S61
"Standard Type 1"
Sharp EL-8026
Texas Instruments TI-30
Canon Multi 8
Casio ST1
Wrist Calculators
Kosmos I & Kosmos Astro
Hanimex Calculator-Recorder
Navigation Calculators
TI58 Special Function Calculators
Sandvik 842S Coromant
"Standard Type 2"
Panasonic Electronic Ruler
Teal Photon
Casio Mini Card LC-78
Feet & inches calculators
SCAT Specialist Calculators
Sharp EL-826
Sharp EL-825
Sanyo CX-1
Elektronika MK-33 etc
Sharp PC1211/Tandy TRS80 PC1
Curta
Slide Rule
Otis King L

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© Text & photographs copyright Nigel Tout   2000-2012 except where noted otherwise.