DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Híradástechnika PTK-1050
| Date of introduction: | 1979 | Display technology: | LED-stick |
| New price: | Display size: | 8 + 2 | |
| Size: | 5.8" x 3.1" x
1.4" 148 x 78 x 36 mm3 |
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| Weight: | 6.4 ounces, 180 grams | Serial No: | |
| Batteries: | BP6, BP7 | Date of manufacture: | year 1979 or 1980 |
| AC-Adapter: | AC9131, AC9132 | Origin of manufacture: | USA (ATA) |
| Precision: | 11 | Integrated circuits: | TMC1501 |
| Logic: | AOS - 4 Pending Operations, 9 () | ||
| Memories: | 8 | ||
| Program steps: | 50 | Courtesy of: | Joerg Woerner |
The
Híradástechnika PTK-1050 does not only look like an early TI-57
Programmable, it's 100% identical.
This PTK-1050 is just one of various OEM calculators sold in the Seventies by Híradástechnika of Budapest, Hungary. We discovered so far:
| • A-100 | Bowmar TX-1000 |
| • K-83 | Bowmar 905 |
| • K-86 | Bowmar 901B |
| • K-106 | Bowmar 901B |
| • K-106P | Bowmar MX-80 |
| • K-831 | Bowmar MX-50 |
| • K-832 | Bowmar MX-55 |
| • K-841 | unknown |
| • TK-835 | Bowmar MX-140 |
| • TK-891 | General Instruments EZ3500 |
| • TK-891-1 | National Semiconductor 4520 |
| • TK-1023 | National Semiconductor 4520 |
| • TK-1024 | National Semiconductor 4640 |
| • TK-1072-1 | APF Mark 56 |
| • PTK-1023 | National Semiconductor 4525 |
| • PTK-1030 | Texas Instruments TI-51-III |
| • PTK-1050 | Texas Instruments TI-57 |
| • PTK-1060 | Elektronika B3-21 |
| • PTK-1072 | Commodore PR-100 |
| • PTK-1072-1 | APF Mark 90 |
| • PTK-1096 | Texas Instruments TI-59 |
| • TI-57 LCD | Texas Instruments TI-57 LCD |
| • TI-57-II | Texas Instruments TI-57-II |
Please find more information about Híradástechnika calculators at the amazing Virtual Museum of Calculators.
Find a nice collection of program listings for the TI-57 on Laurent's website.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 29, 2015. No reprints without written permission.