DATAMATH CALCULATOR MUSEUM
|
DATAMATH CALCULATOR MUSEUM |
Corvus 500
| Date of introduction: | 1975 | Display technology: | LED-stick |
| New price: | Display size: | 10 + 2 | |
| Size: | 5.7" x 2.9" x 1.3" | ||
| Weight: | 5.0 ounces | 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: | 8 | Integrated circuits: | Mostek MK50075A, MK50103, MK50104 |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Peter Muckermann |
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.
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 got the same housing but sports a
green fluorescent display. Other calculators sold under
the Corvus brand are the 310, 320,
400, and 415 models.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, October 17, 2002. No reprints without written permission.