VICTOR MODEL-85

Description

Brand:	VICTOR
Model:	tallymate MODEL-85
Type:	Calculator
Picture:
Batteries:	AA x 6
Lifetime:	Introduced: 1972 Terminated: unknown
Notes:	Quite huge 8-digit calculator with a fluorescent display and big, computer keyboard like buttons. It has a battery indicator with a moving needle: it is actually a small analogue voltmeter. There is one other calculator in this museum that also uses an analogue battery indicator, the CANON LE-80. Two leds above the display indicate an overflow condition "OFL" and negative numbers "NEG". Using sliders it is possible to enable/disable constant operation (for multiplication and division). The other slider is used to set the calculator’s number of decimals (floating point, 2 decimals or 3 decimals). There is also a page on this model on Smitsonian’s site, see it here (link validated 2025-12-06). The calculator on display there has a different colour scheme. Beware when connecting a power adapter (DC voltage of 6V to 9V), the inner pin is the negative pin.

A power adapter. The 110V version has VICTOR part number 34159.