The Victor 1900 calculator is a full floating point machine with one semiconductor memory register and a constant mechanism which can be used in al calculation functions. It uses a plasma display in a sandwich construction, some IC’s and furthermore some hybrid and some discrete components to drive the display.
The keyboard uses conductive rubber sheets on a PCB. The keys press the rubber sheets against the PCB’s circuits. Although it’s probably not as sustainable as reed relays which were often used those days, it still feels like a high quality construction and works flawlessly after so many years.
Use the “+” and “-” key to add/subtract in the display. The “M+” and “M-” key operate in memory.
Works in algebraic mode using the “X” and “=” key. Allows addition/subtraction in memory by using the “=+” and “=-” keys.
Works similar to multiplication.
Function of some keys, switches etc.:
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Addition, Subtraction, Multiplication, Division
1973 ? (My machine contains a PCB and some IC’s with prints indicating 1973 as year of production)
Ca. DM. 1050,- in 1974 (Source: Büromaschinen Lexikon)
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