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Digital Electronics

Digital Electronics
The number of digit 1 present in the binary representation of (3 × 512 + 7 × 64 + 5 × 8 + 3) is

 7
 9
 8
 6

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Digital Electronics
The AND-OR realization of a combinational circuit requires three 3-input AND gates and one 3-input OR gate. This circuit can be designed using

 three 3-input OR gates and one 3-input AND gate
None of these
 four input NAND gates only
 three 3-input NAND gates and one 3-input NOR gate

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Digital Electronics
ASCII and EBCDIC codes are

 numeric codes
 BCD codes
 error correcting codes
 alphanumeric codes

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Digital Electronics
How many numbers are used in the decimal number system?

 0 to 10
None of these
 0 to 9
 1 to 10

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Digital Electronics
Which of the following BCD codes with an odd parity bit included in the end of code group, have error in the code? (I)1001010110000 (II)0100011101100 (III)0111110000011 (IV)1000011000101

 Only (II)
 Both (I)&(IV)
 Both (II)&(III)
 Both (I) & (II)

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Digital Electronics
AND operation of (79)10 & (-56)10 is

 48H
 42H
 08H
 50H

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