Commodore SR-1800 Calculator

 Home > Browse Our Collection > Calculators > Electronic Calculators > Commodore SR-1800 Calculator
 

The Commodore SR-1800 is an electronic calculator made by Commodore.
The calculator can add, subtract, divide, multiply and mathematical functions. It has a vacuum fluorescent display, 10 digits, memory and is powered by either batteries or a mains adaptor.

Dimensions: 80 x 158 x 36 mm
Weight: 174g excluding batteries.
Power: 4.5V DC, 3 x AA size batteries that fit in a compartment cover/cartridge. Also accepts AC adaptor (No. DC-640 or 707, 708 or 709) through a socket on the top side to the far right. Remove disposable batteries before plugging in an adaptor.

Case: Wedge shaped two-piece matt black plastic case. The top area is dominated by an oversized, wrap over top and side green plastic display filter that gives a large bright image. In this is a black printed metallic sticker that sits in its own recess and contains the brand and model number. The keys are typical Commodore, small and squishy but work very well. Extra labels for the keys are raised and painted green. The lower front edge has another black printed metallic sticker that sits in its own recess with "Commodore” on it.
Display: 12 digit green VFD with the third and twelfth digit for negative signs. The twelfth is also used for error indication and the first decimal point for radian indication.
Features: Standard four functions, parentheses, register exchange, reciprocal, squares, square roots, change sign, pi, trig, logs, powers, nth root, polar/Cartesian coordinates, degree/radian conversion, stats and three function first memory with two function second memory.
Age: 1976

Further information is available at http://www.vintage-technology.info/pages/calculators/commodore/co1800.htm

Our calculator has serial number 50754.

Manufacturer: Commodore
Date: 1976

Other Systems Related To Commodore SR-1800 Calculator:

Item Manufacturer Date
Commodore SR-4190R Calculator Commodore Unknown
Commodore SR-4148R Calculator Commodore Unknown
Commodore P50 Programmable Calculator Commodore Unknown
Commodore C110 Commodore / Bowman 1st September 1971
Commodore Minuteman 3 Commodore 1973
Commodore US*5M Desktop Calculator Commodore 1973
Commodore 776M Commodore 1974
Commodore LC925 Calculator Commodore 1975
Commodore SR-9190R Calculator Commodore 1975
Commodore CBM US*121P Commodore 1975
Commodore model P50 Electronic Calculator Commodore 1975
Commodore GL-989R Commodore 1976
Commodore 9R-25 Commodore 1976
Commodore 796M Calculator Commodore 1976
Commodore LC5K Calculator Commodore 1977

This exhibit has a reference ID of CH30279. Please quote this reference ID in any communication with the Centre for Computing History.

 

Commodore SR-1800 Calculator


Click on the Image(s) For Detail


Help support the museum by buying from the museum shop

View all items

Founding Sponsors
redgate Google ARM Real VNC Microsoft Research
Heritage Lottery Funded
Heritage Lottery Fund
Accredited Museum