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{{Instrument Sidebar | |||
|manufacturer=Tektronix | |||
|model=31 | |||
|class=Computer | |||
|series=31 | |||
|summary=Programmable desktop calculators | |||
|image=Tek21-31.jpg | |||
|caption=Tektronix 21 and 31 calculators | |||
|introduced=1973 | |||
|discontinued=(?) | |||
|designers= | |||
|manuals= | |||
* [[Media:Tek 21 and 31 prelim no ocr.pdf|Tektronix 21 and 31 Preliminary Manual (PDF, needs OCR)]] | |||
* [https://w140.com/tek_21_31_calc_interfacing.pdf Tektronix 21 and 31 calculators interfacing information] | |||
* [[Media:Tek 21 31 calculator interface preliminary.pdf|Tektronix 21 and 31 Preliminary Interfacing Manual (PDF, needs OCR)]] | |||
* [[Media:070-1575-00.pdf|Tektronix 31 Operators Manual (PDF, OCR)]] | |||
* [[Media:P7001_Calculator_Aided_Measurements.pdf|P7001/31 Calculator Aided Measurements (PDF)]] | |||
* [[Media:062-1642-00.pdf|Tektronix 31 PROM Preparation Instructions (PDF)]] | |||
* [[Media:062-1593-00.pdf|Tektronix 31 Mathematics Program Library Volume 1 (PDF, OCR)]] | |||
}} | |||
The '''Tektronix 21''' and '''Tektronix 31''' are programmable desktop calculators. | The '''Tektronix 21''' and '''Tektronix 31''' are programmable desktop calculators. | ||
They feature a complete set of transcendental functions. The 21 supports simple programs (sequences of keystrokes) whereas the 31 supports conditional branching and subroutines. | They feature a complete set of transcendental functions. The 21 supports simple programs (sequences of keystrokes) whereas the 31 supports conditional branching and subroutines. | ||
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The ''31/10 Graphic Calculator System'' was a bundle of a model 31 with a [[4010]]-1 graphics terminal, interface and software collection. | The ''31/10 Graphic Calculator System'' was a bundle of a model 31 with a [[4010]]-1 graphics terminal, interface and software collection. | ||
==Links== | ==Links== | ||
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[[Category:Computers]] | [[Category:Computers]] | ||