week 5 Flashcards
1
Q
what is a multiplexer
A
chip which acts as a data selector
2
Q
what features does multiplexer feature
A
single output line
2 or more data inputs / data select lines
3
Q
how many and what are the sizes available for a multiplexer
A
4 sizes:
2: 1
4: 1
8: 1
16: 1
4
Q
how many input lines can be connected to the output on a multiplexer
A
only one input line can connect to an output line
5
Q
what are the benefits of using a multiplexer
A
no moving parts, no parts to wear out very fast switching speeds low power consumption low manufacturing costs small size
6
Q
what is a demultiplexer
A
The demultiplexer is a combinational logic circuit designed to switch one common input line to one of several seperate output line.
7
Q
what output lines are avaliable for demultiplexer
A
4, 8 or 16 output lines
8
Q
what is a decoder
A
simliar to a demultiplexer, just missing data input lines
