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Digital Electronics

Digital Electronics
What is the minimum number of two-input NAND gates used to perform the function of 2-input OR gate?

 four
 two
 one
 three

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Digital Electronics
If a counter having 10 flip flops is initially at 0, What count will if hold after 2060 pulses?

  000 000 1000.
 000 000 1110.
  000 000 1100.
 000 001 1100.

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Digital Electronics
A NAND gate is called a universal logic element because

All the minization techniques are applicable for optimum NAND gate realization
Any logic function can be realized by NAND gates alone
Many digital computers use NAND gates.
It is used by everybody

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Digital Electronics
(44)8 in BCD 8421 code is

 01100011
 01000100
 00100100
 00110110

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Digital Electronics
In a read-only memory information can be stored

 by the user only once during its life time
 by the user a number of times
 in any of the above ways depending upon the type of memory
 at the time of fabrication

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Digital Electronics
Which logic family provide minimum power dissipation

 ECL
 JFET
 CMOS
 TTL

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