Digital Electronics MCQ Practice Test - Set 03 - ObjectiveBooks
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Digital Electronics MCQ Practice Test - Set 03

Practice Test: Question Set - 03


1. How many bytes are there in 1011 1001 0110 1110 numbers?
    (A) 1
    (B) 2
    (C) 4
    (D) 8

2. The 2-input XOR gate has a high output only when the input bits are ________
    (A) Even
    (B) Different
    (C) Low
    (D) High

3. What is the 1's complement of 0000 1111 0010 1101 number?
    (A) 1111 0000 0010 1101
    (B) 1111 0000 1101 0010
    (C) 1111 1100 1010 1100
    (D) 1001 0010 1010 1100

4. Conversion of an octal number 1348 to a binary number is
    (A) 0010110112
    (B) 0011011002
    (C) 0010111002
    (D) 1100112

5. Small-scale integration, abbreviated _______ refers to fewer than 12 gates on the same chip. Medium-scale integration (MSI) means 12 to 100 gates per chip. And large-scale integration (LSI) refers to more than _______ gates per chip.
    (A) SSI, 75
    (B) SSI, 100
    (C) SSI, 1000
    (D) SSI, 10000

6. Resistor Ratio design is used in linear ICs because
    (A) Ratios increase input resistance
    (B) Ratios increase amplifier gain
    (C) Precise resistor values are not possible with IC processes
    (D) None of the above

7. What is the ASCII code for T?
    (A) 1010100
    (B) 1011010
    (C) 1011100
    (D) 1011111

8. A shift register can be used for:
    (A) Parallel to serial conversion
    (B) Serial to parallel conversion
    (C) Digital delay line
    (D) All of the above

9. For what logic gate the outputs in complement of the input?
    (A) NOT
    (B) AND
    (C) OR
    (D) XOR

10. Conversion of hexadecimal number 1D7F16 to a decimal number is
    (A) 755110
    (B) 877110
    (C) 555710
    (D) 778110

11. The hexadecimal number system is widely used in analyzing and programming ________
    (A) Registers
    (B) Chips
    (C) Microprocessors
    (D) Vacuum tube

12. Conversion of an octal number 31378 to it's decimal equivalent is
    (A) 163110
    (B) 163210
    (C) 153110
    (D) 193110

13. Multiplication of 478 by 528 is
    (A) (3144)8
    (B) (4147)8
    (C) (3146)8
    (D) (3184)8

14. A gate is a logic circuit with one or more input signals but ________ output signal.
    (A) Two
    (B) Double
    (C) One
    (D) More than one

15. A microprocessor has memory locations from 0000 to 3FFF. Each memory location stores 1 byte. How bytes can the memory store? Express this in kilobytes?
    (A) 4,095, 4K
    (B) 16,384, 16K
    (C) 32,740, 32K
    (D) 46,040, 46K

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