8255 chip assembly language source code that implements the interface and the schematic diagram: for keyboard display, namely the keypad to enter characters, the digital board displays the character, press E to exit

实验05_8255键盘显示控制.ylt.gif
实验05_8255键盘显示控制.asm
实验05_8255键盘显示控制.lct.gif
实验05_8255键盘显示控制.txt

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