Digital computer electronics Archives

1. Addition of 1101012 and 1011112 is A. 11001002 B. 11010002 C. 11101112 D. 1100112 E. None of the above

11001002

11010002

11101112

1100112 E. None of the above

Detailed SolutionAddition of 1101012 and 1011112 is A. 11001002 B. 11010002 C. 11101112 D. 1100112 E. None of the above

2. Subtraction of 1001011002 from 11101010102 is A. 10010111102 B. 01101000012 C. 11110000012 D. 11110111112 E. None of the above

10010111102

1101000012

11110000012

11110111112 E. None of the above

Detailed SolutionSubtraction of 1001011002 from 11101010102 is A. 10010111102 B. 01101000012 C. 11110000012 D. 11110111112 E. None of the above

3. Which of the following logic expression is wrong? A. 1 + 0=1 B. 1 + 1=0 C. 1+0+1 = 1 D. 1 + 1 + 1 = 1 E. None of the above

1 + 0=1

1 + 1=0

1+0+1 = 1

1 + 1 + 1 = 1 E. None of the above

Detailed SolutionWhich of the following logic expression is wrong? A. 1 + 0=1 B. 1 + 1=0 C. 1+0+1 = 1 D. 1 + 1 + 1 = 1 E. None of the above

4. Consider as RS flip-flops with both inputs set to 0. If a momentary ‘1’ is applied at the input S, then the output A. Q will flip from 0 to 1 B. Q will flip from 0 to 1 and then back to 0 C. Q will flip from 0 to 1 D. Q will flip from 0 to 1 and then back to 0 E. None of the above

Q will flip from 0 to 1

Q will flip from 0 to 1 and then back to 0

Q will flip from 0 to 1

Q will flip from 0 to 1 and then back to 0 E. None of the above

Detailed SolutionConsider as RS flip-flops with both inputs set to 0. If a momentary ‘1’ is applied at the input S, then the output A. Q will flip from 0 to 1 B. Q will flip from 0 to 1 and then back to 0 C. Q will flip from 0 to 1 D. Q will flip from 0 to 1 and then back to 0 E. None of the above

5. A NOR gate recognizes only the input word whose bits are _____ A. 0’s and 1’s B. 1’s C. 0’s D. 0’s or 1’s E. None of the above

0's and 1's

1's

0's

0's or 1's E. None of the above

Detailed SolutionA NOR gate recognizes only the input word whose bits are _____ A. 0’s and 1’s B. 1’s C. 0’s D. 0’s or 1’s E. None of the above

6. How many bytes are there in 1011 1001 0110 1110 numbers? A. 1 B. 2 C. 4 D. 8 E. None of the above

8 E. None of the above

Detailed SolutionHow many bytes are there in 1011 1001 0110 1110 numbers? A. 1 B. 2 C. 4 D. 8 E. None of the above

7. BCD numbers are useful whenever _____ information is transferred into or out of a digital system. A. decimal B. binary C. ASCII D. hexadecimal E. None of the above

decimal

binary

ASCII

hexadecimal E. None of the above

Detailed SolutionBCD numbers are useful whenever _____ information is transferred into or out of a digital system. A. decimal B. binary C. ASCII D. hexadecimal E. None of the above

8. Conversion of hexadecimal number 93FA16 to it’s binary number equivalent is A. 10010011111110102 B. 100100111111101112 C. 1100111111100112 D. 1111100001112 E. None of the above

1.00E+16

1.00E+17

1.10E+15

1111100001112 E. None of the above

Detailed SolutionConversion of hexadecimal number 93FA16 to it’s binary number equivalent is A. 10010011111110102 B. 100100111111101112 C. 1100111111100112 D. 1111100001112 E. None of the above

9. The _____ gate has two or more input signals. All inputs must be high to get a high output A. OR B. NAND C. AND D. NOR E. None of the above

NAND

AND

NOR E. None of the above

Detailed SolutionThe _____ gate has two or more input signals. All inputs must be high to get a high output A. OR B. NAND C. AND D. NOR E. None of the above

10. Conversion of decimal number 9910 to it’s octal number equivalent is A. 1218 B. 1438 C. 1248 D. 1198 E. None of the above

1218

1438

1248

1198 E. None of the above

Detailed SolutionConversion of decimal number 9910 to it’s octal number equivalent is A. 1218 B. 1438 C. 1248 D. 1198 E. None of the above

Page 1 Page 2 Page 3 Page 4 Page 5

Test 1 Test 2 Test 3 Test 4

Exit mobile version