DATAMATH CALCULATOR MUSEUM
|
DATAMATH CALCULATOR MUSEUM |
Corvus 307
| Date of introduction: | 1974 | Display technology: | Panaplex II |
| New price: | Display size: | 10 | |
| Size: | 8.5" x 6.5" x 2.2" | ||
| Weight: | 1 pound 7 ounces | Serial No: | 307-118386 |
| Batteries: | Date of manufacture: | mth 4 year 1975 | |
| AC-Adapter: | 115 V | Origin of manufacture: | USA |
| Precision: | 8 | Integrated circuits: | Mostek MK50203N |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
Corvus,
the consumer division of the famous IC manufacturer MOSTEK, introduced with the
Model 300E their first desktop four-function calculator. This late Model 307
replaces the unusual square-root function with a more common 4-key memory.
The Model 307 makes use of the MOSTEK MK50203N calculator circuit known from the Model 415 but misses the 1/x key.
Three different desktop calculators were available from Corvus:
 | Model 300E: Unusual desktop calculator with square-root function |
| Model 305: Added full clock function to the 300E |
| Model 307: Added 4-key memory instead the square-root function |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, March 23, 2003. No reprints without written permission.