Canon LE-100

Date of introduction:  1974 Display technology:  LED-stick
New price:  $119.95 Display size:  10
Size:  5.5" x 3.1" x 1.5"
 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
Precision:  10 Integrated circuits:  TMS0125
Memories:   Displays:  Bowmar Optostic R7H-122-11
Program steps:   Courtesy of:  Joerg Woerner

The 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.

horizontal rule

If you have additions to the above article please email:

Joerg Woerner, December 5, 2001. No reprints without written permission.