MCS-51單片機輸入輸出口
——
作者:
時間:2007-11-01
來源:網絡
8051有4組8位I/O口:P0、P1、P2和P3口,P1、P2和P3為準雙向口,P0口則為雙向三態輸入輸出口,下面我們分別介紹這幾個口線:
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