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Computer Quiz for IBPS officers scale I and office assistants (multipurpose)

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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

2. Multiplexer means……………..

(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. 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
7. 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
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
Answers :-

1. (2)

2. (4)
3. (3)
4. (5)
5. (2)
6. (4)
7. (5)
8. (1)
9. (2)
10.(4)

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