British Calculators

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Boots

Boots, based in Nottingham, England, is a nationwide chain of chemists stores (drug stores).

 

Known Boots LED & vacuum-fluorescent models:

A follow-on LCD calculator:

Boots 224 Memory

Boots 224 Memory

3v (2x AA batteries).

Display is 8 digits, green fluorescent.

4-function, %, square root, memory.

Integrated circuit - NEC D1877C.

77 x 135 x 18 mm (3.25" x 5.7" x 0.9").

Made in Japan.

This is a Casio H-1 re-badged for Boots.

There is also a second version of the 224 Memory which is slightly different.

Boots 424 Scientific

Boots 424 SCIENTIFIC

3v (2x AA batteries).

Display is 8 digits, green fluorescent.

Scientific.

Integrated circuit - NEC uPD574C.

83 x 144 x 22 mm (3.25" x 5.7" x 0.9").

About 1976.

Made in Japan.

Is a re-badged Casio fx21.

Boots 425 Scientific

Boots 425 SCIENTIFIC

3v (2x AA batteries).

Display is 8 digits, green fluorescent.

Scientific.

Integrated circuit - NEC uPD574C.

83 x 144 x 22 mm (3.25" x 5.7" x 0.9").

Made in Japan.

Is a re-badged Casio fx31.

Boots PD-525

7.5v (5x AA batteries).

Display is 8 digits, green fluorescent, and thermal printer.

4-function, %, memory.

101 x 189 x 47mm / 4x7.5x1.9"

Made in Taiwan.

Boots 527

Boots 527

Display is 8 digits, LCD.

Scientific functions.

This model with its LCD display is an immediate follow-on from the VFD (Vacuum-Fluorescent Display) calculators above, as the technology developed.
Apparently also manufactured by Casio for Boots in the late-1970s/early-1980s time period.

Vintage Calculators

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