DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-108
| Date of introduction: | 2000 | Display technology: | LCD |
| New price: | $5.99 (SRP 2003) $7.00 (SRP 2013) |
Display size: | 8 |
| Size: | 4.3" x 2.5" x
0.40" 110 x 64 x 10 mm3 |
||
| Weight: | 1.5 ounces, 44 grams | Serial No: | |
| Batteries: | n.a. | Date of manufacture: | mth 03 year 2000 (A) |
| AC-Adapter: | Origin of manufacture: | China (N) | |
| Precision: | 8 | Integrated circuits: | Sharp LI3135MS |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
The
TI-108 was introduced already in 1986 and we are
positive that the internal construction was changed from time to time. The featured
calculator was manufactured in March 2000 by contract manufacturer Nam
Tai Electronics, Inc. in China.
Dismantling
this TI-108 reveals a typical design of a calculator developed in the 1990s.
The single-chip calculator circuit is bonded directly to a high-quality printed
circuit board (PCB) while the keyboard makes use of a much simpler Phenolic PCB. We know a similar design e.g. with the TI-15 Explorer.
| Year | Date code | Comment | Manufacturer |
| 1986 (1st design) |
C-0888 | Based on TI-1706 II |
Cal-Comp
Electronics Malaysia |
| 1988 (2nd design) |
I-0888 C-0191 |
Based on TI-1105 |
Inventec
Corporation. Taiwan Cal-Comp Electronics Thailand |
| 1992 (3rd design) |
I-1194 | Smaller solar cells |
Inventec
Corporation. Malaysia |
| 2000 (4th design) |
N-0300 | Printed TI logo | Nam
Tai Electronics, Inc. China |
| 2004 (5th design) |
S-0804 | With
3V backup battery 28-pin IC Package |
Inventec
Corporation. Shanghai |
| 2010 (6th design) |
P-1111 | With
3V backup battery Chip-on-Board |
Inventec
Corporation. Shanghai |
| 2014 (7th design) |
K-0714 L-0216 |
Printed TI logo, with 1.5V backup battery |
Kinpo Electronics. China, Philippines |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, March 5, 2009. No reprints without written permission.