PROBE

Published:2009/7/2 22:17:00 Author:May | From:SeekIC

Red LED comes on to indicate thattest point is at high logic level, while green LED signifies low level. Circuit uses one 7400 quad dualinput NAND gate.-S. Uhrig, Check Logic with This Simple Probe, 73 fidagazine, Dee. 1974, p 76.



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