1. ......... Are used for converting
one type of number system in to the other form
(1) logic gate
(2) Decoder
(3) half adder
(4) Full adder
(5) None of these
(1) One in to many
(2) All of these
(3) many in to many
(4) many in to one
(5) None of these
3. Multiplexers is also known
as.
(1) adder
(2) demux
(3) mux
(4) subtracter
(5) None of these
4. ASCII code isa......... bit code.
(1) 1
(2) 2
(3) 9
(4) 8
(5) 7
5.The decimal number is converted in
to excess 3 codes by adding, to each decimal digit.
(1) 4
(2) 8
(3) 3
(4) 2
(5) 7
6. 110+110=............
(1) 3
(2) 0
(3) 1
(4) 2
(5) None of these
7. 12+12=...........
(1) 1
(2) 0
(3) 2
(4) 3
(5) None of these
8. The digital system usually
operated on.........system.
(1) decimal
(2) binary
(3) octal
(4) hexadecimal
(5) None of these
9. The binary system use powers
of..........for positional values.
(1) 16
(2) 10
(3) 8
(4) 2
(5) None of these
10. After counting 0, 1, 10, 11,
'the next binary number is
(1) 100
(2) 12
(3) 101
(4) 110
(5) None of these
11. In logic algebra, variables can
assume only two values:either..........or 1.
(1) 2
(2) 4
(3) 3
(4) 0
(5) None of these
12. A logic gate is an electronic
circuit which
(1) None of these
(2) allows electron flow only in one
direction
(3) works on binary algebra
(4) alternates between 0&1
values
(5) makes logic decisions
13. In positive logic, logic gate 1
corresponds to
(1) positive voltage
(2) zero voltage level
(3) higher voltage level
(4) lower voltage level
(5) None of these
14. In negative logic, the logic
state 1 corresponds to
(1) lower voltage level
(2) negative logic
(3) zero voltage
(4) more negative voltage
(5) None of these
15. An X-OR gate produces an output
only when it's two inputs are
(1) high
(2) low
(3) None of these
(4) same
(5) different
Answers..
1. (2)
2. (4)
3. (3)
4. (5)
5. (2)
6. (3)
7. (4)
8. (1)
9. (2)
10.(4)
11.(1)
12.(2)
13.(3)
14.(4)
15.(5)
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