# Digital Electronics - Ex-OR and Ex-NOR Gates

### Exercise :: Ex-OR and Ex-NOR Gates - General Questions

6.

Parity systems are defined as either________ or ________ and will add an extra ________ to the digital information being transmitted.

 A. positive, negative, byte B. odd, even, bit C. upper, lower, digit D. on, off, decimal

Answer: Option B

Explanation:

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7.

Which type of gate can be used to add two bits?

 A. Ex-OR B. Ex-NOR C. Ex-NAND D. NOR

Answer: Option A

Explanation:

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8.

Why is an exclusive-NOR gate also called an equality gate?

 A. The output is false if the inputs are equal. B. The output is true if the inputs are opposite. C. The output is true if the inputs are equal.

Answer: Option C

Explanation:

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9.

Show from the truth table how an exclusive-OR gate can be used to invert the data on one input if the other input is a special control function.

 A. Using A as the control, when A = 0, X is the same as B. When A = 1, X is the same as B. B. Using A as the control, when A = 0, X is the same as B. When A = 1, X is the inverse of B. C. Using A as the control, when A = 0, X is the inverse of B. When A = 1, X is the same as B. D. Using A as the control, when A = 0, X is the inverse of B. When A = 1, X is the inverse of B.

Answer: Option B

Explanation:

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10.

Determine odd parity for each of the following data words:
1011101        11110111        1001101

 A. P = 1, P = 1, P = 0 B. P = 0, P = 0, P = 0 C. P = 1, P = 1, P = 1 D. P = 0, P = 0, P = 1

Answer: Option D

Explanation:

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