说明：  < 计算机接口与通信>>的课程设计,设计任务： 1、用RS－232C的零MODEM的连接法连好两机的连线； 2、编一程序，将一台机的键盘输入的键值通过RS－232C口送到另一台机上； 3、编一程序，通过RS－232C口进行一台机到另一台机的文件复制。
(<Computer Interface and Communication>> the curriculum design, the design of tasks: 1, using RS-232C connection zero MODEM good law even connect the two machines 2, made of a procedure will be a machine keyboard keys through the RS-232C port to another machine 3, made of a procedure, through the RS-232C port for a machine to another machine to copy documents.)