1000+ Digital Electronics Multiple Choice Questions and Answers Pdf - 2
Question: 6
Which of the following memory require refreshing?
(A) SRAM
(B) DRAM
(C) EPROM
(D) ROM
Ans: B
DRAM
Question: 7
The ASCII code is a
(A) alphanumeric code
(B) reflective code
(C) weighted code
(D) cyclic code
Ans: A
alphanumeric code
Question: 8
A device which changes from serial data to parallel data is
(A) flip-flop
(B) counter
(C) multiplexer
(D) demultiplexer
Ans: D
demultiplexer
Question: 9
The POS form of expression is suitable for circuit using
(A) OR
(B) AND
(C) XOR
(D) NAND
Ans: A
OR
Question: 10
Data can be changed from special code to temporal code and vice versa by using
(A) combinational circuits
(B) counters
(C) A/D converters
(D) shift registers
Ans: D
shift registers
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