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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.

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If you have additions to the above article please email: joerg@datamath.org.

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