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Digital Electronics

Digital Electronics
Which of the following shows the correct attachment of even parity bit to the data 00001001?

 100001001
 000010011
 000010010
 000001001

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Digital Electronics
Digital computers are more widely used as compared to analog computers, because they are

Always more accurate and faster
Easier to maintain
Useful over wider ranges of problem types
Less expensive

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Digital Electronics
The code used in digital systems to represent decimal digits, letters, and other special characters such as + , – , . , * , etc. is

 octal
 hexadecimal
 ASCII
 natural BCD

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Digital Electronics
The number of 1 in 8-bit representation of 127 in 2’s complement form is m and that in 1,s complement form is n. What is the value of m:n?

 1:1
 2:3
 2:1
 1:2

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Digital Electronics
The most suitable gate for comparing two bits is

 X-OR
 AND
 NAND
 OR

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Digital Electronics
Simplified form of the function f = (x+y+xy)(x+z)

 y+xz
 x+yz
 x+y
 x+xyz

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