Electronics and Communication Engineering - Digital Electronics

41. 

A crystal is frequently used in digital circuits for timing purpose because of its

A. low cost
B. high frequency stability
C. simple circuitry
D. ability to set frequency at desired value

Answer: Option B

Explanation:

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42. 

The value of program counter of 6800 at power on are after reset is

A. 000
B. FFFE
C. User Programmable
D. FFFF

Answer: Option B

Explanation:

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43. 

The Boolean expression for the sub-class (Q) of all electronic instruments which are measuring instruments or are non-digital instruments with battery supply is

A. Q = X(Y + Z)
B. Q = X + YZ
C. Q = XY + Z
D. Q = XY + Z

Answer: Option B

Explanation:

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44. 

Serial in-serial out shift register can be built using D flip flops.

A. True
B. False

Answer: Option A

Explanation:

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45. 

A binary ladder network D/A converter requires

A. resistors of one value only
B. resistors of many different values
C. resistors of two different values
D. none of the above

Answer: Option C

Explanation:

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