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
|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|
|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 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.
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© Joerg Woerner, December 5, 2001. No reprints without written permission.