05-02-2013, 04:09 PM
MULTIPLEXER & DEMULTIPLEXER
MULTIPLEXER.docx (Size: 55.64 KB / Downloads: 21)
AIM:
To design and verify the truth table of a 4X1 Multiplexer & 1X4 Demultiplexer.
THEORY:
Multiplexer is a digital switch which allows digital information from several sources to be routed onto a single output line. The basic multiplexer has several data input lines and a single output line. The selection of a particular input line is controlled by a set of selection lines. Normally, there are 2n input lines and n selector lines whose bit combinations determine which input is selected. Therefore, multiplexer is ‘many into one’ and it provides the digital equivalent of an analog selector switch.
A Demultiplexer is a circuit that receives information on a single line and transmits this information on one of 2n possible output lines. The selection of specific output line is controlled by the values of n selection lines.
PROCEDURE:
1. Connections are given as per the circuit diagrams.
2. For all the ICs 7th pin is grounded and 14th pin is given +5 V supply.
3. Apply the inputs and verify the truth table for the multiplexer & demultiplexer.
RESULT:
The design of the 4x1 Multiplexer and 1x4 Demultiplexer circuits was done and their truth tables were verified.