Imperial 90K
Imperial 90K
Display is 8 digits, green vacuum-fluorescent display (VFD) in a single tube.
4-function, %.
6 v (4 x AAA).
Main integrated circuit is NEC μDP943C (here date coded 1975).
74 mm x 118 mm x 20 mm. (3" x 4.7" x 0.8").
Made in Japan.
IMPERIAL BUSINESS EQUIPMENT
Inside showing the circuit board. The VFD display is at the top and the NEC μPD943C integrated circuit is in the middle.
Imperial models
Vintage British Calculators
Text & photographs copyright, except where stated otherwise, © Nigel Tout 2000-2024.