# Computer Science Chapter 4 Homework

Topics: Addition, Computer, Carry-save adder Pages: 3 (470 words) Published: March 31, 2013

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Instructions

18.| 19.| 20.| 21.| 22.| 23.| 24.| 25.| 26.| 27.| 28.| 29.| F| A| D| C| B| E| F| A| D| C| B| E|

A gate accepts one or more input signals and produces an output signal. Each type of gate performs one logical function. A circuit is a combination of gates designed to accomplish a more complex logical function.

For Exercise 44:
Type the Boolean expression below:
X=A+B+C

Fill in the truth table:
A| B| C| X|
0| 0| 0| 0|
0| 0| 1| 1|
0| 1| 0| 1|
0| 1| 1| 1|
1| 0| 0| 1|
1| 0| 1| 1|
1| 1| 0| 1|
1| 1| 1| 1|

A Source is an electric signal. The base value regulates a gate that determines whether the connection between the source and ground (emitter) is made. An output is usually connected to the source.

Combination circuit is a circuit whose output is solely determined by its input values. In a Sequential circuit a circuit whose output is a function of its input values and the current state of the circuit.

For Exercise 56:

For Exercise 60, fill in the truth table:
A| B| A’| AB| A’ AB|
0| 0| 1| 0| 1|
0| 1| 1| 0| 1|
1| 0| 0| 0| 0|
1| 1| 0| 1| 1|

For Exercise 62, fill in the truth table:
A| B| C| AB| (BC)’| C’| (AB + C’)’| | (AB+C’)’ + (BC)’| 0| 0| 0| 0| 1|...