DATAMATH CALCULATOR MUSEUM
Casio Mini Electronic Calculator
|Date of introduction:||1973||Display technology:||LED-modules|
|New price:||Display size:||8|
|Size:|| 5.8" x 3.1" x 1.8"
148 x 80 x 45 mm3
|Weight:||8.1 ounces, 231 grams||Serial No:||1047597|
|Batteries:||4*AA||Date of manufacture:||mth 10 year 1973|
|AC-Adapter:||AD-4145||Origin of manufacture:||Japan|
|Program steps:||Courtesy of:||Joerg Woerner|
ROOT-8S calculator was introduced in 1973 and is one of the few Casio
calculators based on Texas Instruments technology. Most early Casio calculators
- including the Mini CM-601 -
are based on Hitachi chips, some on NEC chips but as of today we know only two
calculators with TI chips.
We know the TMS0126 "calculator-on-a-chip" located in this Casio ROOT-8S manufactured end of 1973 already from the Canon LE-80R. Canon, in contrast to Casio, developed already in 1969 a long-lasting relationship with Texas Instruments, please remember the legendary Pocketronic basd on the technolgy developed with the Cal-Tech project.
The TMS0126 single-chip calculator circuit is similiar to the TMS0120 developed for the SR-10 and introduced almost one year earlier.
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© Joerg Woerner, January 17, 2010. No reprints without written permission.