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Digital Electronics

Digital Electronics
All the integers and decimal numbers are represented by

 odd numbers
 whole numbers
 real numbers
 even numbers

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Digital Electronics
The simplified block diagram of a 10-bit A/D converter of dual slope integrator type is shown in figure. The 10-bit counter at the output is clocked by a 1 Mhz clock. Assuming negligible timing overhead for the control logic, the maximum frequency of the analog signal that can be converted using this A/D converted is approximately .

 2 KHz.
 500 Hz.
  1 KHz.
 250 Hz.

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

 two
 four
 three
 one

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Digital Electronics
Which one of the following is correct sequence of the numbers represented in the series(2)3, (10)4, (11)5, (14)6, (22)7,…………….

 2, 4, 6, 8, 10, …..
 2, 3, 4, 5, 6, ….
 2, 4, 6, 10, 12, …
 2, 4, 6, 10, 16……..

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Digital Electronics
In Boolean algebra AND is represented by

 -
 +
 ×
 /

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

 Gray code
 BCD code
 XS-3 code
 ASCII code

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