ENS221/CSC 347 Prof. Herb Schanker

Rev A Lab 4

Name ________________________

Part A. and B. should realize circuits with use of multisims and then hardware.

The simulation of multisims must match the hardware truth table.

For all problems use the 7493 binary counter to implement inputs

A. 74151 8 - 1 MUX

Determine the function table for F(A,B,C,D) = (0,3,5,6,8,9,14,15).

Realize the circuit using the 74151 (8x1 multiplexer)and verify the function table.

B. 74154 1-16 Decoder Outputs Low

Realize the following two circuits making use of the 74154 IC

and ONE additional IC. Compare the outputs with their function

table. Minimize the number of inputs in the external IC.

F (A,B,C) = (0,3) & F (A,B,C) = (0,1,3,4,5,7)

C. Prob 4-9 (modified) in Text.

A low turns a segment on.

Determine the multi function table for the given specifications.

Design the BCD to seven segment decoder using the EPROM. Compare

the outputs of the EPROM with the multi function table. The six

unused combinations should result in a blank display. Generate the

inputs with the use of the 7493 both as a BCD counter and as a 0 to

15 binary counter. Alternatively design a Hex to seven segment

display.