PAPER_TAPE_FEED

Published:2009/7/7 2:54:00 Author:May | From:SeekIC

High or 1 bit at output port of microprocessor turns on LED of optocoupler to energize solenoid of pinch-roller drive for paper tape of tape reader. Circuit will control reader from computer keyboard. Optoisolator is essential to keep grounds separate, since mechanical devices are electrically noisy and can generate garbage in computer. Article gives software for tape input routine on 8008 micro-processor.-D. Hogg. The Paper Taper Caper, Kilobaud, March 1977, p 34-40.



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