Published:2009-7-2 22:29:00 Author:May | From:SeekIC
Designed for wiring into microprocessor to show status of an important terminal, as troubleshooting aid. LEVEL LED is on for TTL input of 1 and off for input of 0. EDGE LED lights momentarily when input changes from 1 to 0 or 0 to 1. Use of CMOS inverting buffer 3a at input prevents probe from affecting microprocessor.-F. A. Weissig, A CMOS Logic Probe, BYTE, Oct. 1977, p 11.
Reprinted Url Of This Article: