Computer Science Degree Electronics Exam Questions - Set 04 - ObjectiveBooks
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Computer Science Degree Electronics Exam Questions - Set 04

Practice Test: Question Set - 04


1. 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) Q̅ will flip from 0 to 1
    (D) Q̅ will flip from 0 to 1 and then back to 0

2. A half-adder adds _______ bits
    (A) 2
    (B) 8
    (C) 10
    (D) 16

3. The OR gate has two or more input signals. If any input is _______ the output is high.
    (A) Low
    (B) High
    (C) Zero
    (D) None of the above

4. The functional capacity for LSI devices is
    (A) 1 to 11 gates
    (B) 12 to 99 gates
    (C) 100 to 10,000 gates
    (D) More than 10,000 gates

5. Conversion of decimal number 9910 to it's binary number equivalent is
    (A) 11000112
    (B) 1000112
    (C) 11100012
    (D) 11110002

6. What logic function is obtained by adding an inverter to the output of an AND gate?
    (A) OR
    (B) NAND
    (C) XOR
    (D) NOR

7. Conversion of decimal number 6110 to it's binary number equivalent is
    (A) 1111012
    (B) 1111002
    (C) 1100112
    (D) 0011012

8. The main advantage of hexadecimal numbers is the case of conversion from hexadecimal to ________ and vice versa.
    (A) Decimal
    (B) Binary
    (C) ASCE
    (D) BCD

9. Conversion of decimal number 2810 to it's octal number equivalent is
    (A) 328
    (B) 408
    (C) 348
    (D) 368

10. BCD numbers are useful whenever _______ information is transferred into or out of a digital system.
    (A) Decimal
    (B) Binary
    (C) ASCII
    (D) Hexadecimal

11. Cyclic codes are used in
    (A) Data transfer
    (B) Continuously varying signal representation
    (C) Arithmetic and logical computation
    (D) None of the above

12. Instead of counting with binary numbers, a ring counter uses words that have a single high ________
    (A) Bytes
    (B) Bit
    (C) Gate
    (D) Chip

13. What is the 2's-complement representation of -24 in a 16-bit microcomputer?
    (A) 0000 0000 0001 1000
    (B) 1111 1111 1110 0111
    (C) 1111 1111 1110 1000
    (D) 0001 0001 1111 0011

14. Conversion of binary number 1000112 to an octal number is
    (A) 438
    (B) 478
    (C) 498
    (D) 508

15. With positive clocking the clock signal must be ________ for the flip-flop to respond.
    (A) High
    (B) Low
    (C) Set
    (D) Race

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