DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Corvus 406
| Date of introduction: | 1975 | Display technology: | LED-stick |
| New price: | Display size: | 8 | |
| Size: | 5.0" x 3.0" x 0.9" | ||
| Weight: | 3.7 ounces | Serial No: | 406-0108960 |
| Batteries: | 9V | Date of manufacture: | mth 02 year 1975 |
| AC-Adapter: | A-3310 | Origin of manufacture: | USA |
| Precision: | 8 | Integrated circuits: | Mostek MK50282A |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
The
Corvus 400 changed during production time it's
calculator brain and the power supply. This Corvus 406 uses a 9V battery instead
the four unusual N-batteries found in the earlier model 400.
Within a short period of only some month Corvus manufactured 5 different
versions of the original Model 400. This gives an idea of both cost pressure and
material shortage mid of the 70's.
| Serial Number | Supply | Calculator Brain | Date Code |
Display Driver |
LED Display |
| 400-110233 | 4*N | MK50280A | wk 21 year 74 | 1 IC | LED modules |
| 400-016025 | 4*N | MK50280A | wk 51 year 74 | 1 IC | LED-stick |
| 400-110291 | 4*N | MK50282A | wk 06 year 75 | 2 IC | LED modules |
| 2310-0122872 | 4*A | MK50282N | wk 08 year 75 | discrete | LED-stick |
| 406-0108960 | 9V | MK50282A | wk 07 year 75 | discrete | LED modules |
Learn more about Mostek Calculator Integrated Circuits.
Don't miss the colorful Corvus 804.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, November 19, 2002. No reprints without written permission.