31: Difference between revisions

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* [https://youtube.com/watch?v=cNy_hjOqnps Tektronix 31 Programmable Desktop Calculator running a counter program from tape] @ YouTube
* [https://youtube.com/watch?v=cNy_hjOqnps Tektronix 31 Programmable Desktop Calculator running a counter program from tape] @ YouTube
* [http://classiccmp.org/dunfield/calc/h/tekm31.jpg Tek 31 picture] / [http://www.classiccmp.org/dunfield/calc/h/tekm31b.jpg back side]
* [http://classiccmp.org/dunfield/calc/h/tekm31.jpg Tek 31 picture] / [http://www.classiccmp.org/dunfield/calc/h/tekm31b.jpg back side]
<gallery>
Tek 31 1.jpg
Tek 31 2.jpg
Tek 31 3.jpg
</gallery>


[[Category:Computers]]
[[Category:Computers]]
[[Category:Introduced in 1973]]
[[Category:Introduced in 1973]]

Revision as of 17:02, 5 October 2018

Tektronix 21 and 31 calculators

The Tektronix 31 is a programmable desktop calculator. It features program branching and a complete set of transcendental functions.

It is built around a custom LSI chip set.

Several interfaces were available:

These connect to the calculator through a 50-pin card-edge bus interface supporting DMA access at up to 125 kbyte/s. The bus uses open-collector TTL drivers and can be daisy-chained through multiple peripherals (which all have two matching bus connectors for this purpose). It must be terminated at the last unit.

The 31/10 Graphic Calculator System was a bundle of a model 31 with a 4010-1 graphics terminal, interface and software collection.

Manuals

Links