Join Us ::

Menu Home Classes GK Engineering Past Papers Current Affairs Technical GAT Subject Programming Medical Papers

Computer Science :: All Aptitude Test ::

Home » GAT Subject » Computer Science » Aptitude Test - 37
1.The NOR gate is logically equivalent to an OR gate followed by an _____
A. AND
B. XAND
C. XOR
D. AND
2.The dynamic race hazard problem occurs in
A. combinational circuits only
B. sequential circuits only
C. both combinational and sequential circuits
D. combinational circuits only
3.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. Ratios increase input resistance
4.What advantages do ICs have over discrete-device circuits due to their greater complexity (i.e. more circuitry in less area)
A. Smaller size
B. Higher reliability
C. Lower cost
D. Smaller size
5.Conversion of an octal number 1368 to hexadecimal number is
A. 7E16
B. 5E16
C. 5A16
D. 7E16
6.The control and arithmetic-logic sections are called the _____
A. Block diagram
B. Control Unit
C. Input / Output Unit
D. Block diagram
7.How many full adders are required to construct an m- bit parallel adder?
A. m/2
B. m-1
C. m
D. m/2
8.The number of binary bits required to represent a hexadecimal digit is
A. 3
B. 4
C. 6
D. 3
9.Instead of counting with binary numbers, a ring counter uses words that have a single high _____
A. bytes
B. bit
C. gate
D. bytes
10.Multiplication of 1112 by 1012 is
A. 1100112
B. 1000112
C. 1111002
D. 1100112
11.For what logic gate the outputs in complement of the input?
A. NOT
B. AND
C. OR
D. NOT
12.What is the decimal equivalent of 210?
A. 4096
B. 1024
C. 1000
D. 4096
13.The maximum number of TTL loads that a TTL device can drive reliably over the specified temperature range is
A. fanout
B. bipolar
C. chip
D. fanout
14.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. AND gate
15.In which of the following adder circuits, the carry look ripple delay is eliminated?
A. Half adder
B. Full adder
C. Parallel adder
D. Half adder
16.With positive clocking the clock signal must be _____ for the flip-flop to respond.
A. high
B. low
C. set
D. high
17.Conversion of binary number 10100002 to an octal number is
A. 1198
B. 1018
C. 1118
D. 1198
18.Conversion of an octal number 478 to its binary number is
A. 1100112
B. 1001112
C. 1100112
D. 1100112
19.A _____ is a group of devices that store digital data.
A. circuits
B. register
C. variations
D. circuits
20.Semiconductor memory is:
A. somewhat slower than magnetic core memory
B. a volatile memory
C. somewhat larger than the magnetic core memory
D. somewhat slower than magnetic core memory
21.Conversion of an octal number 1108 to its decimal number is
A. 7010
B. 7210
C. 7310
D. 7010
22.Computer ICs work reliably because they are based on _____ design.
A. Top-bottom
B. System
C. Two-stage
D. Top-bottom
23.The maximum count which a 6-bit binary word can represent is
A. 36
B. 64
C. 63
D. 36
24.A half-adder is also known as:
A. AND circuit
B. NAND circuit
C. NOR circuit
D. AND circuit
25.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 do not control electricity precisely over a wide range
26.A binary adder is a logic circuit that can add _____ binary numbers at a time.
A. Hundreds
B. Thousands
C. One
D. Hundreds
27.A half-adder adds _____ bits
A. 16
B. 8
C. 10
D. 16
28.The 2764 is 65,536-bit EPROM organized as 8,192 words of 8 bits each. How many address lines does it have?
A. 12
B. 14
C. 13
D. 12
29.What does 4k represent?
A. 4000
B. 4096
C. 40
D. 4000
30.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. EPROM
Related Subjects

Date to Date Current Affairs 2022

PakMCQs.net

Quick Links

GAT Subject



   Computer Science    English Mcqs    Agriculture    

Engineering



   Computer Science    Civil Engineering    

Technical



   Networking    Electronics    Database    

Past Papers



   Model Papers    FPSC Papers    
Our Team | Career | Contact | JoinUs | Privacy Policy | DMC

© 2020-2025 by Pak-MCQs.net All Rights Reserved.

Email: [email protected]