术语 | intelligent communications terminal |
释义 | intelligent communications terminal 智能通信终端;[智慧通信终端] Intelligent terminals which can be adapted to communicate with one host computer. Most typical intelligent terminal configurations make use of either an RS232C type of interface or a currentloop interface. RS422/423 is a long distance differential drivertype of communication interface that allows the user to have CRT terminals located some 4000 feet away from the host computer (withoutusing a modem). Using LSI (largescale integration) an intelligent terminal's communications interface can now be programmable for three types of operations: asynchronous, synchronous, or isochronous. Similarly, word length, parity, and baud rate are all under program control. 适用于与主机通信的智能终端,大多数智能终端都配有RS232C型接口或电流环接口。 RS422/423是一种远程差分驱动型通信接口,它允许用户把CRT终端安装在与主机相距大约 4000英尺的地方,而不用调制解调器。采用LSI(大规模集成电路),可编程的智能终端的通信 接口可有三种运行方式:异步、同步或等时。同样,字长、奇偶校验和波特率都可置于程序 控制之下。 |
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