DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-450
| Date of introduction: | 1973 | Display technology: | Panaplex II |
| New price: | Display size: | 12 | |
| Size: | 10.7" x 10.0" x 3.7" | ||
| Weight: | 3 pounds 9 ounces | Serial No: | 450015207 |
| Batteries: | Date of manufacture: | year 1974 | |
| AC-Adapter: | 120V AC | Origin of manufacture: | USA |
| Precision: | 12 | Integrated circuits: | TMS0203, TMC0322 |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Roger Gravel |
This
rare TI-450 was introduced in the year 1973 soon after the TI-3500.
The main limitation in daily use of the TI-3500 was the lack of a memory. The
TI-450 used instead the of the modern "calculator-on-a-chip"
invented already in the year 1971 a two-chip solution. The TMS02xx/TMS03xx
family gives both enhanced driving capabilities for 12-digit displays and
enhanced memory for program and data.
Related calculators using this chip set are the SR-20 and SR-22. The first usage of the chip set was the TI-4000 and the Canon 121F.
A similar housing was used with the PM550-301 Programmer.
| Click on the thumbnail at the right to open a high-resolution picture in a new window. |
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| The picture at the right gives you a view of the Panaplex II display. |  |
| This pictures gives you the two integrated circuits forming the calculator brain. |  |
| This pictures gives you the complete printed circuit board (PCB) of the TI-450 calculator. |  |
Don't miss the rare TI-500, the first
printing calculator introduced by Texas Instruments and the related TI-620.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner and Roger Gravel, May 5, 2002. No reprints without written permission.
