Use the 74LS181, which is a 4 bits ALU and design the two circuit described belo

Question

Use the 74LS181, which is a 4 bits ALU and design the two circuit described below.

The circuit is composed of two parts. The first parts has as inputs two switches from the

trainer and it generates the signals to be used by the ALUs to select the operations

defined in the table given below. The second part of the circuit are the ALUs

themselves, and they require inputs from the selector circuit and data to be operated

upon. This circuit generates outputs to be displayed in the logic monitor.

Assume A = 11110000B and B = 10010110B.

These values can be wired directly to the

74LS181

Use the 74LS181, which is a 4 bits ALU and design the two circuit described below. The circuit is composed of two parts. The first parts has as inputs two switches from the trainer and it generates the signals to be used by the ALUs to select the operations defined in the table given below. The second part of the circuit are the ALUs themselves, and they require inputs from the selector circuit and data to be operated upon. This circuit generates outputs to be displayed in the logic monitor. Assume A = 11110000B and B = 10010110B. These values can be wired directly to the 74LS181's inputs A and B. Input Operation Result 00 F = A plus A 1110 0000 01 F = A minus B 0101 1010 10 F = A + B' 1111 1001 11 F = (AB)' 1001 1111

Explanation / Answer

The output results using the positive logic tables would be

These values can be wired directly to the

74LS181

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