8255芯片参考
摘要：
The 8255A is a programmable peripheral interface (PPI) device designed for use in Intel microcomputer systems. Its function is that of a general purposes I/O component to Interface peripheral equipment to the microcomputer system bush. The functional configuration of the 8255A is programmed by the systems software so that nor 阅读全文
The 8255A is a programmable peripheral interface (PPI) device designed for use in Intel microcomputer systems. Its function is that of a general purposes I/O component to Interface peripheral equipment to the microcomputer system bush. The functional configuration of the 8255A is programmed by the systems software so that nor 阅读全文
posted @ 2008-10-13 15:43 Tisty 阅读(1338) 评论(0) 推荐(0) 编辑