DATAMATH CALCULATOR MUSEUM
Texas Instruments LP3000 / Deskmath
|Date of introduction:||June 1972||Display technology:||Panaplex II|
|New price:||Display size:||8|
|Size:||8.4" x 6.2" x 2.5"|
|Weight:||1 pound 14 ounces||Serial No:||3000-00632|
|Batteries:||Date of manufacture:||mth 08 year 1972|
|AC-Adapter:||120 V||Origin of manufacture:||USA|
|Program steps:||Courtesy of:||Joerg Woerner|
|Download manual:||(US: 2.4 MBytes)|
The famous TI-2500 Datamath calculator was first announced in April 1972 together with the Deskmath LP3500 desktop model. Find a reprint of the Press Release about the introduction here. Beginning June 1972 first customers got in the Neiman-Marcus and Sanger-Harris department stores in Dallas, TX both the TI-2500 and this rare Deskmath LP3000 before the formally introduction on September 21, 1972.
In September 1972 the nameplates of the desktop models changed to the more common TI-3000 and TI-3500 designations. Unfortunately the "Deskmath" nickname disappeared.
To our current knowledge only few (about
calculators were produced between May 1972 and August 1972 in a beige housing. For the later production
a slightly darker color was chosen. Don't miss the transitional
TI-3000 Deskmath manufactured in September 1972.
Dismantling the early Deskmath LP3000 and comparing it with the later TI-3000 reveals a lot of differences:
|The housing of the Deskmath LP3000 is fixed with only 3 screws instead the 5 screws found on the later TI-3000.|
|The top part of the housing makes use of expensive metal inserts for the screws but lacks the rounded cut outs for the keys.|
|The Deskmath LP3000 sports an early Panaplex II display with only 8 digits for the numbers and 3 additional signs for negative numbers, entry- and calculation-overflow.|
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© Joerg Woerner, October 13, 2004. No reprints without written permission.