DATAMATH CALCULATOR MUSEUM
|Date of introduction:||1974||Display technology:||LED-stick|
|New price:||$79.95||Display size:||8|
|Size:||5.4" x 3.0" x 1.4"|
|Weight:||7 ounces||Serial No:||515423|
|Batteries:||4*NiCd AA||Date of manufacture:||year 1974|
|AC-Adapter:||Origin of manufacture:||Japan|
|Program steps:||Courtesy of:||Peter Muckermann|
The LE-81M seems to be the direct successor of the odd looking LE-81 calculator. It was introduced together with the LE-100 sporting 10-digits and the scientific calculator F-5.
electronics of the LE-81M is centered around a TMC0605 single-chip calculator
circuit developed by Texas Instruments. This design traced back to the TI-2550
introduced Januar, 1974. The display of the LE-81M is a small LED-stick
manufactured by competitor Bowmar.
The rechargable battery pack of the LE-10 was replaced with a compatible unit holding either 4 AA-sized rechargable NiCd batteries or standard deposible batteries.
Later - and cheaper - calculators in the LE-line were the LE-83, LE-84 and LE-85.
If you have additions to the above article please email: firstname.lastname@example.org.
© Joerg Woerner, December 5, 2001. No reprints without written permission.