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WorksheetsDigital Electronics and Computer Organization
Total questions: 30
Worksheet time: 30mins
A subtractor subtracts the subtrahend from the minuend
True
False
Which logic gate functionality does this circuit represent
AND Gate
OR Gate
NAND Gate
ENXOR Gate
Which logic gate functionality does the circuit represent
AND Gate
OR Gate
EXOR Gate
NOR Gate
Which of the following is NOT a universal gate
NAND Gate
EXOR Gate
OR Gate
A full adder can subtract three bits of data
TRUE
FALSE
7432 is a:
Quad two input OR Gate IC
Quad two input AND Gate IC
Dual four input OR Gate IC
Triple three input OR Gate IC
Which among the following fall under the category of BASIC Gates
AND Gate
OR Gate
NAND Gate
EXNOR Gate
A priority encoder is a sequential circuit
False
True
How many select lines will a 16:1 MUX require?
2
3
4
None of the above
Can a decoder be used as a De-multiplexer?
Yes
No
In Active Low Logic, logic 0 is considered as logic 1
True
False
Which among the following is the HEXINVERTER IC
7404
7408
7402
7400
Which of the following is the expression for 'Bout' in a Full Subtractor when X-Y is performed
A full subtractor is obtained by cascading two half subtractors
True
False
A MUX with 2 select lines can handle ____ (number) of output line(s)
2
4
8
1
In Full Adder, Cin represents the carry from the
Present state
Previous state
The expression for the Sum output of a Full Adder is similar to the expression of:
Sum of Half Adder
Difference of Half Subtractor
Difference of Full Subtractor
A 1:8 DMUX uses _____ (number) of select lines.
2
3
4
8
A half adder does not satisfy all the requirements of an adder
TRUE
FALSE
The functionality of a NAND Gate can be obtained by cascading ICs 7408 and 7404
True
False
Cannot be determined
A MUX with 3 select lines can route:
8 input lines to one output line
4 input lines to one output line
Two sets of 4 input lines to two sets of single output lines
one input line to 8 output lines
A MUX and DMUX can be used to establish a communication link between multiple input and output lines
True
False
Which among the following holds TRUE for encoders
Reversible transformation of data in different formats
Secure encoding of data
Validates the integrity of data
Protects the confidentiality of data
____ is/ are the technique(s) to transform data from one format to another so that it can be understood and consumed by different systems
Encoding
Multiplexing
Demultiplexing
Encoding and Decoding
During the process of encoding and decoding, the information in the message is retained
True
False
Depends on the algorithm
Depends on the communicating systems involved
Encoding is used to enforce security on the data transmitted
True
False
Multiplexers are monodirectional electronic devices.
True
False
Identify the digital electronic circuit
Multiplexerr
Demultiplexer
Encoder
Decoder
The demerit of a half adder is rectified in a full adder
True
False
IC74139 is a
3 line to 8 line decoder IC
3 line to 8 line DMUX IC
8:! MUX
3 3 line to 8 line decoder/DMUX IC
