PPT Slide

3 – Combinational Logic Implementation

© 1996 Gaetano Borriello

Multiplexers as general-purpose logic (cont'd)

• Generalization

• Example: F(A,B,C,D) can be implemented by an 8:1 MUX

36

n-1 mux control variables

single mux data variable

Four possible

configurations

of the truth table rows

Can be expressedas a function of In, 0, 1

choose A,B,C as control variablesmultiplexer implementation

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