Corvus 500

Date of introduction:  1974 Display technology:  LED-stick
New price:   Display size:  10 + 2
Size:  5.6" x 2.8" x 1.3"
 142 x 72 x 33 mm3
Weight:  4.9 ounces, 140 grams Serial No:  462215
Batteries:  3*AA NiCd Date of manufacture:  mth 10 year 1975
AC-Adapter:  3.6V DC, 125mA Origin of manufacture:  Hong Kong
Precision:  10 Integrated circuits:  Mostek MK50075A, MK50103, MK50104
Memories:  1    
Program steps:   Courtesy of:  Peter Muckermann

Corvus_500_PCB.jpg (66172 Byte)The Corvus 500 continued an approach started already in 1972 with the Hewlett-Packard HP-35: An universal Data-Processor with external program memory to define the final function of the calculator. Mostek sold two different ROM-sets - the MK50101/2 for financial calculators and this MK50103/4 found in a lot of scientific calculators.

Don't miss the Corvus 600.

Learn more about Mostek Calculator Integrated Circuits.

Corvus_500_Disp.jpg (29421 Byte)One advantage of the MK50075 calculator chip was it's ability to support external displays with a 10-digit mantissa and 2-digits of exponent.

The Corvus 615 uses the same housing but sports a green fluorescent display.
Other calculators sold under the Corvus brand are the 310, 320, 400, and 415 models. Don't miss the colorful Corvus 804.

horizontal rule

If you have additions to the above article please email:

Joerg Woerner, October 17, 2002. No reprints without written permission.