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Q1. Subtraction of 1001011002 from 11101010102 is
(A) 10010111102
(B) 01101000012
(C) 1111000001211110000012
(D) 11110111112
Answer: (A) 10010111102
Q2. Express 8192 in K units.
(A) 8 × 103 K
(B) 8.192 k
(C) 8 K
(D) None of the above
Answer: (C) 8 K
Q3. What is the ASCII code for T?
(A) 1010100
(B) 1011010
(C) 1011100
(D) 1011111
Answer: (A) 1010100
Q4. Conversion of decimal number 6110 to it’s binary number equivalent is
(A) 1111012
(B) 1111002
(C) 1100112
(D) 0011012
Answer: (A) 1111012
Q5. 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
Answer: (C) AND
Q6. The two basic technologies for digital ICs are bipolar and MOS. Bipolar technology is preferred for_______ and _ whereas MOS technology is better suited to LSI.
(A) SSI, MSI
(B) MSI, LSI
(C) SSI, LSI
(D) ECL, DTL
Answer: (A) SSI, MSI
Q7. The _ is ultraviolet-light-erasable and electrically programmable. This allows the user to erase and store until programs and data are perfected.
(A) EPROM
(B) ROM
(C) PROM
(D) RAM
Answer: (A) EPROM
Q8. 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
Answer: (D) All of the above
Q9. 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
Answer:(B) Binary
Q10. The 2764 is 65,536-bit EPROM organized as 8,192 words of 8 bits each. How many address lines does it have?
(A) 8
(B) 12
(C) 13
(D) 14
Answer: (C) 13
Q11. The NOR gate is logically equivalent to an OR gate followed by an __
(A) AND
(B) XAND
(C) XOR
(D) Inverter
Answer: (D) Inverter
Q12. Why are digital circuits easier to design than analog circuits?
(A) They do not control electricity precisely over a wide range
(B) They are made in the form of ICs
(C) All elements of digital circuit are from the same family
(D) They are smaller in size
Answer: (A) They do not control electricity precisely over a wide range
Q13. For what logic gate the outputs in complement of the input?
(A) NOT
(B) AND
(C) OR
(D) XOR
Answer: (A) NOT
Q14. Conversion of decimal number 2810 to it’s octal number equivalent is
(A) 328
(B) 408
(C) 348
(D) 368
Answer: (C) 348
Q15. The output of the following gate is 0 only if at least one of the inputs is 1:
(A) AND gate
(B) OR gate
(C) EX-OR gate
(D) NOR gate
Answer: (D) NOR gate
Digital Computer Electronics MCQ – All Set
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