DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-53
Date of introduction: | August 1978 | Display technology: | LCD |
New price: | DM 115.00 | Display size: | 8 (5 + 2) |
Size: | 5.3" x 2.9" x
0.35" 134 x 74 x 9 mm3 |
||
Weight: | 2.9 ounces, 82 grams | Serial No: | 2970248 |
Batteries: | 2*LR44 | Date of manufacture: | wk 19 year 1982 |
AC-Adapter: | Origin of manufacture: | Italy | |
Precision: | 11 | Integrated circuits: | TP0323 |
Memories: | 1 | ||
Program steps: | 32 | Courtesy of: | Joerg Woerner |
Download manual: | (UK: 4.4M Bytes) |
The TI-53 is not really a programmable calculator, it uses a small memory to hold up to 32 key-codes. Due to the low-power CMOS technology of its close relative TI-50 this memory won't lose its information if you turn the calculator off. Nevertheless this calculator could be called a classic, it was on the production line till the year 1985.
Simply by comparing the designation of the integrated circuits of the calculators you'll get the first members of the slimline family:
• TP0320 (CD3201)
TI
Investment Analyst • TP0320 (CD3202) TI-30-II • TP0321 TI-50 • TP0322 TI-Business Analyst-II • TP0323 TI-53 • TP0324 TI-35 • TP0326 TI-38 and TI-20 |
This calculator was later available in the slanted housing of the TI-55-III. View it here.
In 1984 the era of the slimline calculators was over and Texas Instruments introduced a family of three calculators manufactured in Taiwan:
•
TI-30 III • TI-35 II • BA II |
Don't miss the rare Business Card, probably the missing calculator using one of the TP032x chips.
We discovered recently with the Sharp EL-503
a scientific calculator with the TP0327 single-chip calculator circuit, closing
the missing link between the TP0326 located in the TI-38 and the TP0328 known
from the Jeppesen Sanderson avstar.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 5, 2001. No reprints without written permission.