9.7. Arithmetic Logic Unit (ALU) Design
The Arithmetic Logic Unit (ALU) is the heart of the computational capability of a computer.
A typically ALU Block Diagram (74LS382) is shown below:
S2 S1 S0 Output: F and CO
0 0 0 Clear
0 0 1 B minus A
0 1 0 A minus B
0 1 1 A plus B
1 0 0 A XOR B
1 0 1 A or B
1 1 0 A and B
1 1 1 PRESET