DIGITAL ELECTRONICS QUIZ

Statement(A): 2’s complement arithmetic is preferred in digital computers. Statement(R):The Hardware required to obtain the 2’s complement of a number is simple.

A is false but R is true

Both A & R are true and R is the correct explanation of A

A is true but R is false

Both A & R are true but R is not the correct explanation of A

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following shows the correct attachment of even parity bit to the data 00001001?

000010010

000001001

000010011

100001001

TRUE ANSWER : ?
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Dual slope ADC has R = 1 KΩ and C = 0.22 nanofarad has charging and discharge times for some voltage is 9 ns and 3 ns respectively. The reference Voltage is 2.2 V. What is the peak voltage reached by triangular wave during charging?

30 mV.

90 mV.

900 mV.

300 mV.

TRUE ANSWER : ?
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Digital computers are more widely used as compared to analog computers, because they are

Easier to maintain

Less expensive

Useful over wider ranges of problem types

Always more accurate and faster

TRUE ANSWER : ?
YOUR ANSWER : ?

To add two m-bit numbers, the required number of half adder is

2m-1

2m+1

2m-1

2m

TRUE ANSWER : ?
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OR operation is equivalant to

Both B and C

Intersection

Union

Division

TRUE ANSWER : ?
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Temperature variation is a/an

Analog quantity

None

Either Digital or Analog quantity

Digital quantity

TRUE ANSWER : ?
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The XS-3 code is a

error-correcting code

weighted code

cyclic code

self-complementing code

TRUE ANSWER : ?
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The fan put of a 7400 NAND gate is

2TTL

10TTL

5TTL

8TTL

TRUE ANSWER : ?
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AND operation of (79)10 & (-56)10 is

42H

48H

08H

50H

TRUE ANSWER : ?
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