31: Difference between revisions
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* [http://www.oldcalculatormuseum.com/tek31.html Tek 31 @ oldcalculatormuseum.com] / [http://www.oldcalculatormuseum.com/s-tek31.html Spec sheet] | * [http://www.oldcalculatormuseum.com/tek31.html Tek 31 @ oldcalculatormuseum.com] / [http://www.oldcalculatormuseum.com/s-tek31.html Spec sheet] | ||
* [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://classiccmp.org/dunfield/calc/h/tekm31.jpg Tek 31 picture] / [http://www.classiccmp.org/dunfield/calc/h/tekm31b.jpg back side] | ||
[[Category:Computers]] | [[Category:Computers]] | ||
[[Category:Introduced in 1973]] | [[Category:Introduced in 1973]] | ||
Revision as of 22:55, 2 May 2017
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:
- Model 152 General Purpose BCD Interface
- Model 153 Tektronix Instrument Interface
- Model 154 RS-232C Interface
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.
