EEE World
Sunday, December 9, 2012
Quiz on digital basics
Digital Basics Quiz
Digital Basics Quiz
Which of the following is not a weighted code ?
XS3
BCD
Decimal
Hexadecimal
A decoder is a
Combinational Circuit
Seuential Circuit
Neither
Could be both
Carry look ahead adder is faster than ripple carry adder
True
False
Both operate at same speed
Depends on input
The truth table of "sum" of a half adder is same as
OR gate
AND gate
XOR gate
XNOR gate
If the inputs to an NAND gate are negated, it becomes equivalent to
AND gate
OR gate
XOR gate
NOT gate
A 64:1 Mux will have how many select lines ?
64
4
8
6
A circuit that converts input Decimal to BCD is a
Encoder
Decoder
Mux
Demux
To perform BCD addition using an IC meant for adding Binary numbers we need to
Add 6 to the all result obtained from the binary addition
Subtract six from all the results obtained from the binary addition
Add 6 to the all results greater than 9, obtained from the binary addition
Subtract six from all the results greater than 9, obtained from the binary addition
Convert the binary number 1111 to its grey code equivalent
1001
1000
1111
1010
In a 1:8 DEMUX if select lines are 011 and Data input is 1, output will be available on
Line 0 of output
Line 3 of output
Line 2 of output
Line 7 of output
Hope you had fun.
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