# Electronics and Communication Engineering - Digital Electronics

6.

A depletion type NMOS is operated in enhancement mode. Vp = - 4 volts. For VGS = + 3 volts as VDS is increased, ID becomes nearly constant when Vps equals

 A. 1 volt B. 3 volts C. 4 volt D. 7 volts

Explanation:

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7.

Which one of the following is D/A conversion technique?

 A. Successive approximation B. Weighted resistor C. Dual slope D. Single slope

Explanation:

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8.

Assuming accumulator contain A 64 and the carry is set (1). What will accumulator (A) and carry (CY) contain after ANA A?

 A. A 6 H, 1 B. A 6 H, 0 C. 00 H, 0 D. 00 H, 1

Explanation:

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9.

A number is expressed in binary 2's complement as 10011 decimal equivalent value is

 A. 19 B. 13 C. -19 D. -13

Explanation:

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10.

In INHIBIT operation

 A. output is 1 when both inputs are 0 B. output is 0 when blocking input is 1 C. output is 0 when blocking input is 0 D. output is 1 when blocking input is either 0 or 1