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Dear candidates you will find MCQ questions of Digital Principles and System Design here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.

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Q. 1) If the decimal number is a fraction then its binary equivalent is obtained by                  the number continuously by 2.

(A) dividing
(B) multiplying
(C) adding
(D) subtracting
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Q. 2) Binary coded decimal is a combination of

(A) two binary digits
(B) three binary digits
(C) four binary digits
(D) five binary digits
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Q. 3) The decimal number 10 is represented in its BCD form as                      

(A) 10100000
(B) 01010111
(C) 00010000
(D) 00101011
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Q. 4) Carry out BCD subtraction for (68) – (61) using 10’s complement method.

(A) 00000111
(B) 01110000
(C) 100000111
(D) 011111000
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Q. 5) When numbers, letters or words are represented by a special group of symbols, this process is called

(A) decoding
(B) encoding
(C) digitizing
(D) inverting
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Q. 6) A three digit decimal number requires                  for representation in the conventional BCD format.

(A) 3 bits
(B) 6 bits
(C) 12 bits
(D) 24 bits
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Q. 7) How many bits would be required to encode decimal numbers 0 to 9999 in straight binary codes?

(A) 12
(B) 14
(C) 16
(D) 18
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Q. 8) The excess-3 code for 597 is given by                      

(A) 100011001010
(B) 100010100111
(C) 010110010111
(D) 010110101101
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Q. 9) The decimal equivalent of the excess-3 number 110010100011.01110101 is                            

(A) 970.42
(B) 1253.75
(C) 861.75
(D) 1132.87
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Q. 10) In boolean algebra, the OR operation is performed by which properties?

(A) associative properties
(B) commutative properties
(C) distributive properties
(D) all of the mentioned
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