DATAMATH CALCULATOR MUSEUM
Casio Mini CM-601 Electronic Calculator
|Date of introduction:||August 1972||Display technology:||Fluorescent|
|New price:||$99.95||Display size:||6|
|Size:|| 3.2" x 6.1" x
81 x 154 x 37 mm3
|Weight:||8.7 ounces, 248 grams||Serial No:|
|Batteries:||4*AA||Date of manufacture:||mth 03 year 1973|
|AC-Adapter:||Origin of manufacture:||Japan|
|Precision:||12||Integrated circuits:||Hitachi HD32127, NEC uPD129C|
|Program steps:||Courtesy of:||Joerg Woerner|
Casio Computer Co., Ltd introduced its first handheld calculator Casio
Mini CM-601 already in August 1972, even a few weeks before Texas Instruments'
entered the market with the famous
Dismantling this Casio Mini CM-601 manufactured in March 1973 reveals a clean design centered around a Hitachi HD32127 single-chip calculator circuit and a NEC uPD129C display driver circuit.
Please notice that the featured calculator sports a 6-digit tube-style display while earlier models used six individual tubes.
The Casio Mini CM-601 was soon replaced with the Mini CM-602 adding a decimal key and dedicated [=] key but keeping the unusual 6-digit display and [►] key. Next in line were the CM-603, CM-604, and CM-605 - all with a similiar horizontal layout before offering in 1975 their first product in the more common "portrait orientation". Every rule has an exception, don't miss the odd ROOT-8S.
The Casio Mini CM-601 was ahead its time, Casio's entry into the
market of handheld scientific calculators was with the fx-10
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© Joerg Woerner, May 26, 2011. No reprints without written permission.