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Digital Computer Electronics

Digital Computer Electronics
Conversion of hexadecimal number 1D7F16 to a decimal number is

778110
None of these
555710
755110
877110

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Digital Computer Electronics
A 2's-complement adder-subtracter can add or subtract binary numbers. Sign-magnitude numbers represent _____ decimal numbers, and 2's complements stand for _____ decimal numbers.

negative, positive
positive, negative
sign, hexa
hexa, sign
None of these

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Digital Computer Electronics
Address 200H contains the byte 3FH. What is the decimal equivalent of 3FH

63
32
38
None of these
16

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Digital Computer Electronics
The simplified form of the Boolean expression (X + Y + XY)(X + Z) is

XY + YZ
X + YZ
None of these
X + Y + Z
XZ + Y

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Digital Computer Electronics
Addition of 1101011012, 1110111012, 0001111112, 1001011012, 1111101112 is

10001010001012
None of these
11110110000102
10110101110102
10010000000102

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Digital Computer Electronics
Conversion of an octal number 1068 to binary number is

None of these
11100102
10001102
11001102
100001102

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