Hand-held Calculators

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apf Mark V

apf Mark V

Switched on and display cover open.

apf Mark V

Distinctive features: One of the first of a long line of hand-held calculators from APF Corp, of New York. Has carrying handle, flip-up cover over display, battery-level meter.

Technical details:
Display is 8 digits, green fluorescent in a single tube.


Main integrated circuit - Texas Instruments TMS0101 (date coded week 23 1973).

6v (4x C).

120 mm x 188 mm x 40 mm (4.75" x 7.5" x 1.6").


Has battery voltage meter, on left below the display.
Flip up cover over display, released when the power switch is moved to the ON poistion.

Made in Japan,
APF Corporation INC, New York.


View inside, showing the large single display tube.

Hand-held Calculators

Vintage Calculators

© Text & photographs copyright Nigel Tout   2000-2020  except where noted otherwise.