Victor 1900-1421

Details:

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.


Usage:

Addition/subtraction:

Use the “+” and “-” key to add/subtract in the display.   The “M+” and “M-” key operate in memory.


Multiplication:

Works in algebraic mode using the “X” and “=” key.   Allows addition/subtraction in memory by using the “=+” and “=-” keys.


Division:           

Works similar to multiplication.


Function of some keys, switches etc.:

Calculator InfoRepair information & pictures of internals
Buiten-schuin-2-stack-s.jpgBuiten-s.jpgP1000863s.jpg
P1000857s.jpg
Buiten-onderzijde-stack-s.jpg

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Serial number:

Build in:

Functions:

Market-introduction:

Production until:

Price:


4748-654

1973

Addition, Subtraction, Multiplication,  Division

1973 ?  (My machine contains a PCB and some IC’s with prints indicating 1973 as year of production)

1974 ?

Ca. DM. 1050,- in 1974  (Source: Büromaschinen Lexikon)