a 3x4 keypad manipulation code wich can be used in several cases such as security and data acquisition

CodeLockAVR electronic combination lock is realised with Atmel AVR microcontroller AT90S2313. Program in hex code is 2 kB long. User code is consisted of 1 to 4 digits. If the code is entered in the correct sequence, then after 1 second the r

Reads a standard 3X4 keypad and assembles No in Digits variable, then displays