AVR Experiment board procedures, the matrix 4* 4 keyboard keys show keys issued driver buzzer sound. Connection definition: SW1 ~ 8 open, SW2-1, 2,3,4, open, SW2-6 for the LED power, SW3-8 for the system reset pin. PA2 (SW5-7) for the buzzer output, PB (SW4-1 ~ 8) for keyboard access Notepad: The procedures are designed to scan the keyboard matrix understanding and demonstration of procedures suitable for beginners to use. The use of devices: ATMEGA8535, can be replaced. Default-chip crystal oscillator 1MHz function: the initial LED display- press the button that shows the key button. Using a 4 × 4 matrix keyboard.

实验14_矩阵键盘键值显示_ASM
...........................\avrBuild.bat
...........................\key_4x4.aps
...........................\key_4x4.asm
...........................\key_4x4.hex
...........................\key_4x4.map
...........................\key_4x4.obj

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