Multiplexing device

Multiplex is a comprehensive system, usually contains a certain number of data input, n a address inputting (in binary form choose a kind of data input). Multiplex have a single output, and the choice of the data input values are the same. Multiplexing technique may follow the following principles, such as: TDM, one of FDM, CDM or WDM. Multiplexing technique also used in software operation, such as: will also spread to multithreading information equipment or program.

Photoelectric multiplex literally explanation is light path signal and circuit signal laminating device, general light cat namely optical transceiver (light cat with different optical transceiver, optical transceiver only signal converting, no protocol conversion, and light cat also contain protocol conversion), is a signal into light signals devices, multiplex is more complex to light up the way to signal, this device should be a kind of system, the floorboard of the actual use of this equipment is not much, another kind is various light multiplexed, but this kind of composite modulation will use a different wavelength of light for multi -channel signal transmission, arrive again after demodulation. This kind of equipment only in national backbone fiber net use, using the inherent cable resources for expansion, the equipment is very expensive integrated business multiplexing icf is a can integrate data and voice, fax and LAN access multiplexing devices that can efficiently in a line on mix preach voice/fax, data, which reduces the network communication cost, can save system operation cost for the enterprise.

Assembler:

Shaped like (B&S) | (A & (~ S)), including A, B for input, S for selector. 1: when S as T, ~ S for F, A blocked, the return value is B.

2: when S F, B are shielded, the return value is A.

When the input is 2 n prefixes, selector number for n, selector on reflexive and demand and to generate the open position.

Such as four input for A, B, C, D, it takes 2 selector S1, S2, logic equations for:

(A & (~ S1) & (~ S2)) | (B & (~ S1) & (S2) | (C & (S1) & (~ S2)) | (D & (S1) & (S2)