1. Total different symbols used in hexadecimal number system are ..... ?

8

16

4

2

Answer: 16

Explanation:


2. An 8085 microprocessor executes the following instructions: Two numbers are represented in signed 2's complement form as P=11101101 and Q = 11100110 If Q is subtracted from P, the value obtained in signed 2's complement form is ?

100000111

00000111

11111001

011111001

Answer: 00000111

Explanation:


3. If (11X1Y)8= (12C9)16 then the values of X and Y are ?

5 and 1

5 and 7

7 and 5

1 and 5

Answer: 5 and 1

Explanation:


4. Which of the following represents ' E316" ?

(ICE)16 + (A2)16

(IBC)16 - (DE)16

(2BC)16 - (IDE)16

(200)16 - (11D)16

Answer: (200)16 - (11D)16

Explanation:


5. F's complement of (2BFD)hex is ?

E 304

D 403

D 402

C 403

Answer: D 402

Explanation:


6. The two numbers represented in signed 2's complement form are P11101101 and Q=11100110. If Q is subtracted from P, the value obtained in signed 2's complement form is ?

100000111

00000111

11111001

111111001

Answer: 00000111

Explanation:


7. Addition of binary number 10011 and 11101 are ?

11000

10001

10000

110000

Answer: 110000

Explanation:


8. How many 1's are present in the binary representation of 3 x 512 +7x 64 +5 x 8+3 ?

How many 1's are present in the binary representation of 3 x 512 +7x 64 +5 x 8+3

11

10

9

Answer: 9

Explanation:


9. Addition of binary number 11011 and 10111 is ?

10010

11001

010010

110010

Answer: 110010

Explanation:


10. Which of the following is a weighted code ?

Excess-3

Both BCD and Excess-3

Gray

BCD

Answer: BCD

Explanation: