DATAMATH CALCULATOR MUSEUM
Texas Instruments RR-2 Thesaurus / Spell Checker
|Date of introduction:||1990||Display technology:||LCD dot matrix|
|New price:||Display size:||15 char|
|Size:||3.2" x 7.0" x 0.7"|
|Weight:||5.5 ounces||Serial No:||501877|
|Batteries:||4*AAA||Date of manufacture:||mth 01 year 1991|
|AC-Adapter:||Origin of manufacture:||Taiwan|
|Precision:||10||Integrated circuits:|| CPU: Toshiba TMP84C02
ROM: Toshiba TC534000
RAM: UMC UM6116
|Program steps:||Courtesy of:||Joerg Woerner|
Texas Instruments introduced already in the year 1989 this powerful combination of a Thesaurus and a Spell-Checker. In Germany it was advertised as PS-4500.
A much smaller sibling was available with the PS-4000.
What is a Thesaurus? It is a word processing feature that finds synonyms and antonyms. Type in a word and get out a list of synonyms and antonyms. If you find a word (term, expression, phrase) you like better, you can replace the original word in your sentence. The storage capacity covers 40,000 keywords to create 590,000 synonyms.
What is a Spell-Checker? Type in a word and the Spell-Checker compares it immediately with roughly 97,000 words of its memory.
A Spell-Checker without the Thesaurus was introduced already in 1989 with the otherwise identical RR-1. The main difference in the hardware is the size of the Read-Only-Memory - the RR-2 uses a 512k Bytes chip instead the 128k Bytes of the RR-1.
If you have additions to the above article please email: firstname.lastname@example.org.
© Joerg Woerner, February 17, 2002. No reprints without written permission.