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Digital Computer Electronics

Digital Computer Electronics
Which of the following boolean algebra statements represent commutative law

(B+C)(A.B)+(A.C)
A+BB+A
(A+B)+CA+(B+C)
A+AA
None of these

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Digital Computer Electronics
The binary number 1100 0101 has _____ bytes

1
8
4
None of these
2

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Digital Computer Electronics
Conversion of an octal number 74328 to a binary number is

1111000110102
1100110101112
11110001101112
None of these
1111111110002

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Digital Computer Electronics
BCD numbers are useful whenever _____ information is transferred into or out of a digital system.

hexadecimal
ASCII
decimal
None of these
binary

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Digital Computer Electronics
Binary-Coded-decimal (BCD) numbers express each digit as a _____

All of these
None of these
bit
byte
nibble

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Digital Computer Electronics
A combinational logic circuit which is used when it is desired to send data from two or more source through a single transmission line is known as

encoder
None of these
demultiplexer
multiplexer
decoder

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