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Digital Computer Electronics

Digital Computer Electronics
Conversion of a octal number 638 to its decimal number is

5310
None of these
5110
5710
6110

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Digital Computer Electronics
Convert the 1000 0000 0000 1111 signed binary number to decimal number.

15
-15
30
None of these
-30

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Digital Computer Electronics
The 2-input XOR gate has a high output only when the input bits are _____

different
even
low
high
None of these

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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.

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

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Digital Computer Electronics
The number of binary bits required to represent a hexadecimal digit is

6
8
4
None of these
3

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Digital Computer Electronics
A microcomputer is a computer that uses a _____ for its CPU.

vacuum tube
registers
chips
None of these
microprocessor

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