说明:51在多机通讯时可采用此方式,3线式,忙时可无限等待,闲时传输速率高-51 in the multi-machine communication use this form, a three-line, busy waiting for an unlimited time, in his spare time high speeds <徐中阳> 在 2008-10-13 上传
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说明:c++编程 c++编程 c++编程 c++编程-c c c Programming Programming c c c Programming Programming c c c Programming Programming c c c Programming Programming c Programming <刘比> 在 2008-10-13 上传
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