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Digital Electronics

Digital Electronics
The output of a gate is HIGH if and only if all its inputs are LOW. It is true for

 NAND
 X-OR
 NOR
 X-NOR

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Digital Electronics
The data bus width of a ROM of size 2048 × 8 bits is

 16
 10
 12
 8

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Digital Electronics
In Boolean algebra A.A is equal to

 2A
 A²
 A
 1

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Digital Electronics
Which of the following memories uses one transistor and one capacitor as basic memory unit

 DRAM
 SRAM
 Both SRAM and DRAM
 None

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Digital Electronics
A boolean function can be transformed into logical ________.

 graph
 map
 diagram
 matrix

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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 .

  1 KHz.
 250 Hz.
 2 KHz.
 500 Hz.

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