31: Difference between revisions
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==Manuals== | ==Manuals== | ||
* [[Media:Tek 21 and 31 prelim no ocr.pdf|Tektronix 21 and 31 Preliminary Manual (PDF, needs OCR)]] | |||
* [http://w140.com/tek_21_31_calc_interfacing.pdf Tektronix 21 and 31 calculators interfacing information] | * [http://w140.com/tek_21_31_calc_interfacing.pdf Tektronix 21 and 31 calculators interfacing information] | ||
Revision as of 16:58, 5 October 2018
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.
The 31/10 Graphic Calculator System was a bundle of a model 31 with a 4010-1 graphics terminal, interface and software collection.
Manuals
- Tektronix 21 and 31 Preliminary Manual (PDF, needs OCR)
- Tektronix 21 and 31 calculators interfacing information
