MCQGeeks
0 : 0 : 1
CBSE
JEE
NTSE
NEET
English
UK Quiz
Quiz
Driving Test
Practice
Games
Quiz
Computer Science
Digital Computer Electronics
Quiz 3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Q.1
An OR gate has 6 inputs. What is the only input word that produces a 0 output?
0
111
111000
111111
None of the above
Q.2
A diagram that illustrates the ore (Logic) of functions in a progran called a
Flowchart
Sequence of steps
Direction of flow
All of the above
None of the above
Q.3
With an RS latch a high S and low R sets the output to _____ ; a low S and a high R _____ the output to low.
No change, set
Race, high
high, reset
set, reset
None of the above
Q.4
A p- channel enhancement type MOSFET performs much the same function as a PNP transistor, except that
it operates much faster
it is considerably larger
it is controlled by voltage rather than by current, so that it requires very little current at the control terminal
it is controlled by current rather than by voltage like a bipolar transistor.
None of the above
Q.5
Flip-flop outputs are always
complimentary
the same
independent of each other
same as inputs
None of the above
Q.6
The output 0 and 1 levels for TTL logic family is approximately
0.1 and 5 V
0.6 and 3.5 V
0.9 and 1.75V
-1.75 and -0.9 V
None of the above
Q.7
A _____ TTL device can sink up to 16mA and can source up to 400 MA.
Low-power
high-power
Standard
Schottky
None of the above
Q.8
De Morgan's second therm says that NAND gate is equivalent to a bubbled _____ gate.
AND
XAND
XOR
OR
None of the above
Q.9
What logic function is produced by adding an inverter to each input and the output of an AND gate?
NAND
NOR
OR
XOR
None of the above
Q.10
What is the 2's complement of 0011 0101 1001 1100 number?
1100 1010 1100 1011
1100 1010 0110 0011
1100 1010 0110 0100
1100 1010 1111 1111
None of the above
Q.11
When a transistor is cut off or saturated, transistor _____ have almost no effect
wave
variations
stage
circuits
None of the above
Q.12
Express -7 as 16-bit signed binary numbers.
0000 0000 0000 0111
1000 0000 0000 0111
0111 0000 0000 0001
0111 0000 0000 0000
None of the above
Q.13
The inverter OR gate and AND gate are called decision-making elements because they can recognize some input _____ while disregarding others. A gate recognizes a word when its output is _____
words, high
bytes, low
bytes, high
character, low
None of the above
Q.14
A positive AND gate is also a negative
NAND gate
NOR gate
AND gate
OR gate
None of the above
Q.15
In which code the successive code characters differ in only one bit position?
gray code
excess 3 code
8421 code
algebraic code
None of the above
Q.16
Conversion of binary number 101101
2
to hexadecimal is
37
16
2D
16
2E
16
27
16
None of the above
Q.17
ASCII and EBCDIC differ in
their efficiency in storing data
the random and sequential access method
the number of bytes used to store characters
their collecting sequences
None of the above
Q.18
Conversion of decimal number 61
10
to it's binary number equivalent is
110011
2
11001110
2
111101
2
11111
2
None of the above
Q.19
An OR gate can be imagined as
switches connected in series
switches connected in parallel
MOS transistors connected in series
All of the above
None of the above
Q.20
Address 200H contains the byte 3FH. What is the decimal equivalent of 3FH
63
32
16
38
None of the above
Q.21
Conversion of binary number 100011
2
to an octal number is
43
8
47
8
49
8
50
8
None of the above
Q.22
What table shows the electrical state of a digital circuit's output for every possible combination of electrical states in the inputs?
Function table
Truth table
Routing table
ASCII table
None of the above
Q.23
Conversion of binary number 1001010
2
to to its decimal number is
74
10
97
10
72
10
63
10
None of the above
Q.24
Conversion of an octal number 112
8
to hexadecimal number is
4A
16
5A
16
15
16
20
16
None of the above
Q.25
The functional difference between SR flip-flop and JK flip-flop is that
JK flip-flop is faster than SR flip-flop
JK flip-flop has a feed back path
JK flip-flop accepts both inputs 1
JK flip-flop does not require external clock
None of the above
Q.26
What is the hexadecimal equivalent of a binary number 10101111
AF
9E
8C
All of the above
None of the above
Q.27
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.
SSI, MSI
MSI, LSI
SSI, LSI
ECL, DTL
None of the above
Q.28
A combinational logic circuit which generates particular binary word or number is
decoder
multiplexer
encoder
demultiplexer
None of the above
Q.29
The 1's compliment of binary number 11010 is:
101
10
110
11101
None of the above
Q.30
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.
SSI, 75
SSI, 100
SSI, 1000
SSI, 10000
None of the above
0 h : 0 m : 1 s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Report Question
×
What's an issue?
Question is wrong
Answer is wrong
Other Reason
Want to elaborate a bit more? (optional)
Support mcqgeeks.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page