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Digital Electronics

Digital Electronics
A three-state buffer has the following output states

 Set, Reset, Halt
 1, 0, float
 Both A and B
 High, Low, Float

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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

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

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Digital Electronics
Why decoder is used in the digital electronics ?

 To convert non coded information into coded form
None of these
 To convert coded information into non coded form
 It is used to separate address bus and data bus

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Digital Electronics
EBCDIC code is a

 5-bit code
 8-bit code
 7-bit code
 10-bit code

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Digital Electronics
(44)8 in BCD 8421 code is

 01100011
 01000100
 00110110
 00100100

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Digital Electronics
A read only memory in which the present contents must be erased before the new information can be stored is

 ROM
 EAROM
All of these
 PROM

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