DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-53
| Date of introduction: | 1985 | Display technology: | LCD |
| New price: | Display size: | 8 (5 + 2) | |
| Size: | 5.8" x 2.8" x 0.85" 147 x 72 x 22 mm3 |
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| Weight: | 3.0 ounces, 84 grams | Serial No: | |
| Batteries: | 2*LR44 | Date of manufacture: | wk 32 year 1985 |
| AC-Adapter: | Origin of manufacture: | Italy | |
| Precision: | 11 | Integrated circuits: | TP0323 |
| Memories: | 1 | ||
| Program steps: | 32 | Courtesy of: | Joerg Woerner |
This
TI-53 looks somewhat odd. If you compare it with the TI-55
III
you notice that one line of keys is missing. Remember again the TI-55-II,
the first calculator available in the slanted housing. The advantage of the
TI-55-II compared with the slimline calculators like the original TI-53
was the bigger display and the extra line of keys. And now this one!
The
electronics and the display of the slimline calculator in the slanted housing.
Hard to understand but on the production line in 1985. Please notice that the
TP0323 first generation C-MOS
single-chip calculator was introduced already in 1978.
In 1986 Texas Instruments changed the design of the "2nd generation slanted
calculators" slightly. If you compare this TI-53 introduced already in 1985
with the later TI-53 (1986) focus yourself on
the position of the TI logo.
Don't miss the rare TI-40, introducing the missing keys.
Another off member in the second generation slanted family is the BA-III.
If you are interested in the calculating accuracy of scientific calculators don't miss the Calculator forensics.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, February 4, 2004. No reprints without written permission.