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Computer Science :: All Aptitude Test ::
Home
»
GAT Subject
»
Computer Science
» Aptitude Test - 40
1.
FETs are used in linear ICs to:
A.
increase input resistance
B.
provide large resistances
C.
increase device complexity
D.
increase input resistance
2.
A flip-flop can store
A.
one bit of data
B.
two bits of data
C.
three bits of data
D.
one bit of data
3.
Which of the following is the first integrated logic family?
A.
RTL
B.
DTL
C.
TTL
D.
RTL
4.
A flip-flop is a _____ element that stores a binary digit as a low or high voltage.
A.
chip
B.
bus
C.
I/O
D.
chip
5.
An AND gate has 7 inputs. How many input word are in its truth table?
A.
64
B.
32
C.
16
D.
64
6.
When an inverter is placed between both inputs of an SR flip-flop, the resulting flip-flop is
A.
JK flip-flop
B.
D flip-flop
C.
T flip-flop
D.
JK flip-flop
7.
Arithmetic operation are coded in
A.
Decision symbols
B.
Input/Outpur(I/0)
C.
Processing symbols
D.
Decision symbols
8.
Which of the following electronic component is not found in ordinary ICs?
A.
diodes
B.
resistors
C.
transistors
D.
diodes
9.
A shift register can be used for
A.
parallel to serial conversion
B.
serial to parallel conversion
C.
digital delay line
D.
parallel to serial conversion
10.
Which of the following logic families use bipolar transistors?
A.
TTL
B.
GaAS
C.
NMOS
D.
TTL
11.
Which of the following Boolean algebra rules is wrong?
A.
0 + A = A
B.
1 + A = 1
C.
A + A = A
D.
0 + A = A
12.
Conversion of an octal number 60
8
to binary number is
A.
110000
2
B.
10011
2
C.
1100111
2
D.
110000
2
13.
Conversion of binary number 1100011
2
to hexadecimal is
A.
63
16
B.
57
16
C.
46
16
D.
63
16
14.
Conversion of binary number 1100011
2
to its decimal number is
A.
29
10
B.
97
10
C.
99
10
D.
29
10
15.
Conversion of binary number 1100011
2
to an octal number is
A.
140
8
B.
143
8
C.
147
8
D.
140
8
16.
A preliminary guide for comparing the simplicity of logic circuits is to count the number of input _____ leads.
A.
wire
B.
bus
C.
gate
D.
wire
17.
An AND gate has 7 inputs, what is the only input word that produces a 1 output?
A.
0
B.
1111
C.
1110000
D.
0
18.
Convert the 1000 0000 0000 1111 signed binary number to decimal number.
A.
15
B.
-15
C.
-30
D.
15
19.
The _____ is a sequence of instructions that tells the computer how to process the data.
A.
data
B.
program
C.
controls
D.
data
20.
The output of the following gate is 1 only if at least one of its inputs is 0.
A.
AND gate
B.
OR gate
C.
NAND gate
D.
AND gate
21.
The highest decimal number that can be represented with 10 binary digits is
A.
1023
B.
1024
C.
512
D.
1023
22.
The clock signals are used in sequential logic circuits
A.
to tell the time of the day
B.
to tell how much time has elapsed since the system was turned on
C.
to carry serial data signals
D.
to tell the time of the day
23.
In boolean algebra, the overbar stands for the NOT operation, the plus sign stands for the _____ operation.
A.
AND
B.
OR
C.
NAND
D.
AND
24.
The reduced form of the Boolean expression (A+B)(A+C) is:
A.
AB+AC
B.
A+B+C
C.
AC+B
D.
AB+AC
25.
A full-adder adds _____ bits, and producing a SUM and a _____
A.
8, SUBTRACTION
B.
3, CARRY
C.
16, DIVIDE
D.
8, SUBTRACTION
26.
The radix of the binary number is:
A.
3
B.
1
C.
2
D.
3
27.
The get() function returns _____
A.
a character
B.
void
C.
a reference to the object that invoked it
D.
a character
28.
The most efficient data type for a variable that the number 20000 is the _____ data type
A.
Character
B.
Double
C.
Float
D.
Character
29.
The number 5.5e3 is a _____ constant
A.
character literal
B.
named literal
C.
numeric literal
D.
character literal
30.
The compiler determines the type used in a template function via ___?
A.
the name of the function
B.
the first variable declared within the function
C.
the type of the argument passed to the function
D.
the name of the function
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