What is a relay power supply?
Simplex Communication refers to the simplex, at any time of the communication process, information only by one party to another party of A B, such as radio and television media, bp. The simplex operation is now rarely used.
When a computer host connects a display terminal with a serial interface, in the half duplex mode, the input process and the output process use the same path. Some of the computer and the display terminal adopts half duplex work, then, from the keyboard into the characters sent to the host at the same time it is sent to the terminal display, rather than the return way, so to avoid the process of receiving and sending process at the same time.
Half duplex, that is, Half, duplex, Communication, means that at any time during the communication process, information can be transmitted from A to B, and from B to A, but only in one direction. When half duplex mode is adopted, the transmitter and receiver of each end of the communication system are switched to the communication line through the receive / output switch, so as to make the direction switching, therefore, the time delay can be generated. The receive / output switch is actually an electronic switch controlled by software.
