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Keeloq® Code Hopping Decoder using a PIC16c56 - Application Note Published 29-May-97. . . [Microchip]
KEELOQ® Code Hopping Decoder Using Secure Learn - AN662 - Technology Inc. . . [Microchip App Note - last updated on 23-May-11]
KEELOQ® Simple Code Hopping Decoder - AN663 - Technology Inc. . . [Microchip App Note - last updated on 23-May-11]
Keyboard to Ascii Decoder - Host to Keyboard Protocol is
initiated by taking KBD data line low. However to prevent keyboard from sending data at same Time that you
attempt to send keyboard data, it is common to take KBD Clock line low for more than 60us. This is more than
one bit length. nKBD data line is taken low, while KBD clock line is released. . .
Key-Reading Circuit Saves I/O Pins - 03/06/03 EDN Design Idea Amplifiers perform precision divide-by-2 circuitsome
microcontroller applications usually use too many I/O pins to read keys or onboard switches; in many cases,
few pins remain available for other uses. Some alternative ways to r. . . [by Gustavo Santaolalla, Digital
Precision Systems, Buenos Aires, Argentina]
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