DATAMATH CALCULATOR MUSEUM
|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
|Weight:||5.5 ounces, 155 grams||Serial No:||130430|
|Batteries:||4*AA||Date of manufacture:||year 1977|
|AC-Adapter:|| BH-117 (110V) or
|Origin of manufacture:||Japan|
|Precision:||8||Integrated circuits:||Mitsubishia M58628-001|
|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.
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© Joerg Woerner, December 12, 2010. No reprints without written permission.