COMP2421 Computer Organization 2019/20 Semester 1
Lab 10 Logic Gate Design V
In this lab, we will have more practice on combinational circuits.
Examine the four-segment display as shown below. The circuit has three inputs (A, B and C), which provide a three-bit code used in packed signal representation. The four outputs define which segments will be activated to display a given signal.
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Combinational Circuit
001 010 011
100 101 110
Task 1 Truth Table
Develop a truth table for the above circuit.
000 001 010 011 100 101 110 111
COMP2421 Computer Organization 2019/20 Semester 1
Task 2 Boolean Functions
Write down the Booleans functions for a, b, c and d, based on your work in Task 1.
Task 3 K-maps
Create the K-maps and simplify the Boolean functions obtained from Task 2.
C 00 01 11 10
C 00 01 11 10
C 00 01 11 10
C 00 01 11 10
COMP2421 Computer Organization 2019/20 Semester 1
Task 4 Build the Circuit
Build the circuit in Logisim based on the simplified Boolean functions.
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