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Digital Electronics

Digital Electronics
In ULSI, the number of gate circuits per chip is

 > 50,000
 > 1,00,000
 1,00,000 to 10,00,000
 50,000 to 99,999

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Digital Electronics
An AND gate can be imagined as

 transistors connected in series
 switches connected in series
 switches connected in parallel
 transistors connected in paralle

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Digital Electronics
1s Complement of 11001010 is

 00110101
 11001011
 00110111
 11001001

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Digital Electronics
Consider the following multiplication: (10w1z) × (15)10 = (y01011001)2 Which one of the following gives appropriate values of w,y and z?

 w = 0,y = 1,z = 1
 w = 0,y = 0,z = 1
 w = 1,y = 1,z = 1
 w = 1,y = 1,z = 0

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Digital Electronics
Which of the following is known as a mod-2 adder?

 NOR gate
 NAND gate
 X-OR gate
 X-NOR gate

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Digital Electronics
Which one of the following even parity codes are in errors. (I)100110010 (II)011101010 (III)10111111010001010

 Only (II)
 Only (III)
 Both (II)&(III)
 Both (I)&(III)

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