Computer Logic 2
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- 1.
A logic gate that gives an output of TRUE only if both inputs are true
- A.
NOT gate
- B.
OR gate
- C.
AND gate
Correct Answer
C. AND gate -
- 2.
An inverter gate
- A.
NOT gate
- B.
OR gate
- C.
AND gate
Correct Answer
A. NOT gate -
- 3.
What is the smallest binary number that can be represented in an 8-bit register?
- A.
0000 0000
- B.
1111 1111
- C.
255
Correct Answer
A. 0000 0000 -
- 4.
What is the largest unsigned binary number that can be represented in an 8-bit register?
- A.
0000 0000
- B.
1111 1111
- C.
255
Correct Answer
B. 1111 1111 -
- 5.
Give the two's complement of 010011001
- A.
10110111
- B.
10110110
- C.
1
Correct Answer
A. 10110111Explanation
To convert unsigned binary to two's complement:
1. Invert all digits
2. Add 1Rate this question:
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- 6.
Add the following binar numbers: 1010 + 0010
- A.
1000
- B.
1110
- C.
1100
Correct Answer
C. 1100 -
- 7.
Computer registers hold binary numbers. Binary numbers can represent
- A.
Numbers and characters
- B.
Numbers only
- C.
Characters only
Correct Answer
A. Numbers and characters -
- 8.
What is an overflow error?
- A.
An error that occurs when a logic circuit can only output a 1
- B.
An error that occurs when a value is too large to fit in the available register
- C.
A programming error
Correct Answer
B. An error that occurs when a value is too large to fit in the available register -
- 9.
The one's complement of 01101110 is
- A.
11101110
- B.
01101111
- C.
10010001
Correct Answer
C. 10010001Explanation
One's complement is found by inverting all digitsRate this question:
-
- 10.
What is the smallest two's complement that can be stored in an 8-bit register? (Give the decimal equivalent of this number)
- A.
-128
- B.
0
- C.
-127
Correct Answer
A. -128 -
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Current Version
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Mar 15, 2022Quiz Edited by
ProProfs Editorial Team -
Feb 09, 2011Quiz Created by
Marlenegalea
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