DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Toshiba SC-7500
| Date of introduction: | 1977 | Display technology: | Fluorescent |
| New price: | Display size: | 10 + 2 | |
| Size: | 5.7" x 3.2" x 1.0" 146 x 82 x 26 mm3 |
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| Weight: | 5.5 ounces, 155 grams | Serial No: | 130430 |
| Batteries: | 4*AA | Date of manufacture: | year 1977 |
| AC-Adapter: | BH-117 (110V) or BH-118 (220V) |
Origin of manufacture: | Japan |
| Precision: | 8 | Integrated circuits: | Mitsubishia M58628-001 |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
This
Toshiba SC-7500 added some statistical functions to Toshiba's first scientific
calculator, the SC-7100 introduced already in 1975.
The
SC-7500 is based on a Mitsubishi M58628-001 single-chip calculator circuit,
known e.g. from the Radio Shack EC-495, in place of the Toshiba T3327 chip found
in the SC-7100. Running Mike Sebastian's "Calculator forensics"
gives for the SC-7500 with 9.003347136 a much better result than the SC-7100
with 9.148251 instead of the expected value close to 9.0000.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 12, 2010. No reprints without written permission.