HEXADECIMAL_ENTRY

Published:2009/7/10 22:15:00 Author:May | From:SeekIC

Permits entering program into microprocessor in hexadecimal notation, in much less time than is required with binary notation. Binary switches from input port of μP are replaced with 16-key keyboard shown. To enter hexadecimal number 3B, turn on power; press 3 button, press decimal bar, then press B button; operate loading switch, then press decimal bar again to set keyboard for next entry. Article traces keyboard operation through circuit.-B. K. Erickson, Talk to Your μP with a Hex-Latching Keyboard, EDN Magazine, Nov. 20, 1976, p 319-320.



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