DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-502 (RED)
| Date of introduction: | 1987 | Display technology: | LCD |
| New price: | Display size: | 8 | |
| Size: | 4.4" x 2.6" x 0.75" 113 x 66 x 19 mm3 |
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| Weight: | 1.6 ounces, 45 grams | Serial No: | |
| Batteries: | LR1130 | Date of manufacture: | mth 01 year 1991 (A) |
| AC-Adapter: | Origin of manufacture: | Thailand (C) | |
| Precision: | 8 | Integrated circuits: | Sharp LI3135 |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
The
TI-502 was one of the very cheap calculators sold by Texas Instruments. A small,
slanted housing, rubber keys and a battery enhanced by a colorful type
designation. That's it!
Between 1986 and 1987 four different colorings appeared:
| •
TI-502 red • TI-502 blue • TI-502 yellow • TI-502 black |
Dismantling
this TI-502 calculator manufactured in January 1991 by
Cal-Comp Electronics in
Thailand reveals a clean design centered around a Sharp LI3135 single-chip
calculator circuit.
Production of the TI-502 was shifted 1991 from Taiwan to Thailand.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 5, 2001. No reprints without written permission.