DATAMATH CALCULATOR MUSEUM
|
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 Display: LCD-Driver |
| Memories: | 1 | ||
| 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: joerg@datamath.org.
© Joerg Woerner, February 17, 2002. No reprints without written permission.