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WorksheetsDigital Electronics
Total questions: 20
Worksheet time: 15mins
Which among the following is a combinational circuit
Flip Flop
Latch
Counter
Encoder
Full Adder can be formed by cascading two half adders
True
False
When performing X-Y in boolean algebra, borrow is generated when X is less than Y
True
False
Cannot be determined
The combinational circuit used for routing the input value to the output line based on the select signal combination
Multiplexer
Demultiplexer
Encoder
Decoder
Which among the following is the BCD representation of the decimal number 12
1100
0001 0010
1101
0001 0011
Which flip flop is used for designing counters
T flip flop
SR flip flop
D flip flop
T latch
A T flip flop can be obtained by shorting the input lines of:
SR Flip Flop
D Flip Flop
JK Flip Flop
RS Latch
In synchronous counters all the flip flops are clocked at the same time
True
False
The output of the D flip flop at a particular instant is the same as the input present at that particular instant
True
False
The excess-3 code of 0010
0101
0011
0100
0110
Which among the following gates is an inequality detector
XOR Gate
XNOR Gate
NAND Gate
NOR Gate
Flip flops are edge triggered and latches are level triggered
True
False
Minterms are:
Sum of Products
Product of Sums
Cannot be determined
Combinational digital circuits are capable of storing atleast one bit of data
True
False
Depends on the design
Cannot be determined
Which among the following is the IC number for XNOR Gate
74266
7400
7486
7408
7432 is a:
Quad two input OR Gate IC
Triple three input OR Gate IC
Dual four input OR Gate IC
Which among these are non-weighted codes
Excess-3 Code
BCD Code
Gray Codes
Binary Codes
Which among these is called a 'unit distance code'?
Gray Code
Excess-3 Code
BCD Code
Alphanumeric Code
Binary code is also called 8421 code
True
False
How many LEDs does a 7 segment display have
7
8
14
1
