Digital Electronics - Digital Concepts

Exercise :: Digital Concepts - General Questions

6. 

What is a digital-to-analog converter?

A. It takes the digital information from an audio CD and converts it to a usable form.
B. It allows the use of cheaper analog techniques, which are always simpler.
C. It stores digital data on a hard drive.
D. It converts direct current to alternating current.

Answer: Option A

Explanation:

A DAC converts an abstract finite-precision number (usually a fixed-point binary number) into a concrete physical quantity (e.g., a voltage or a pressure).

7. 

What are the symbols used to represent digits in the binary number system?

A. 0,1
B. 0,1,2
C. 0 through 8
D. 1,2

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

8. 

A full subtracter circuit requires ________.

A. two inputs and two outputs
B. two inputs and three outputs
C. three inputs and one output
D. three inputs and two outputs

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

9. 

The output of an AND gate is LOW ________.

A. all the time
B. when any input is LOW
C. when any input is HIGH
D. when all inputs are HIGH

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

10. 

Give the decimal value of binary 10010.

A. 610
B. 910
C. 1810
D. 2010

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.