DATAMATH CALCULATOR MUSEUM
|Date of introduction:||1974||Display technology:||LED-stick|
|New price:||$119.95||Display size:||10|
|Size:|| 5.5" x 3.1" x
139 x 78 x 37 mm3
|Weight:||6.7 ounces, 190 grams||Serial No:||166995|
|Batteries:||4*NiCd AA or 4*AA Alkaline||Date of manufacture:||mth 06 year 1974|
|AC-Adapter:||Origin of manufacture:||Japan|
|Memories:||Displays:||Bowmar Optostic R7H-122-11|
|Program steps:||Courtesy of:||Joerg Woerner|
Canon LE-100 was one of the few portable calculators using a precision and
LED-display of 10-digits. It was introduced together with the LE-81M.
From the technology the LE-100 is similar to the SR-10 introduced by Texas Instruments just a few months earlier but sports a TMS0125 single-chip calculator circuit instead the original TMS0120 chip. The remaining components of the featured LE-100 calculator were not manufactured by TI, the LED-modules are obviously from TI's competitor Bowmar while the display-drivers look like discrete circuits encapsulated in small plastic blocks.
The TMS0120 single-chip calculator circuit was derived from the TMS1802, better known as first "calculator-on-a-chip".
Later - and cheaper - calculators in the LE-line were the LE-83, LE-84 and LE-85.
Compare it with the Bowmar 901D.
Later in 1974 Canon introduced with the LD-80 their first pocket calculator with the green VF-Display (Vacuum Fluorescent) and terminated the LE-series.
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© Joerg Woerner, December 5, 2001. No reprints without written permission.