摘要：
RS232 is the most known serial port used in transmitting the data in communication and interface. Even though serial port is harder to program than the parallel port, this is the most effective method in which the data transmission requires less wires that yields to the less cost. The RS232 is the communication line which enables the data transmission by only using three wire links. The three links provides ‘transmit’, ‘receive’ and common ground... 阅读全文
posted @ 2007-07-13 11:17 answer 阅读(3454) 评论(2) 推荐(0) 编辑
