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Digital Electronics

Digital Electronics
A bubbled NAND gate is equivalent to a

 X-OR gate
 OR gate
 NOR gate
 NAND gate

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Digital Electronics
A computer has a word length of 8 bits (including sign). It is required to determine the range of integers that can be stored in the computer. If 2’s complement is used to represent the numbers, then the range will be

 -128 to 127
 -256 to 256
 -128 to 128
 -256 to 255

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Digital Electronics
The number of rows in the truth table of a 4-input gate is

 8
 12
 4
 16

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Digital Electronics
The decimal equivalent of hexadecimal number “BEED” is

 48,877
 48,777
 none
 47,877

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Digital Electronics
Which of the following codes is known as the 8421 code?

 XS-3 code
 BCD code
 Gray code
 ASCII code

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Digital Electronics
A group of four bits is known as

 Bit
 Nibble
 Byte
 Word

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