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Digital Electronics

Digital Electronics
1 kb represents

 10,000 bytes
 1000 bytes
 100 bytes
 1024 bytes

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Digital Electronics
The binary number 10101 is equivalent to decimal number ___________.

27
21
12
19

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Digital Electronics
The maximum positive and negative numbers that can be represented in one’s complement using n-bits are respectively

 None of these
 +(2n-1-1),-(2n-1-1)
 +(2n-1-1),-2n-1
 +2n-1,-(2n-1-1)

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Digital Electronics
An n variable K-map can have

 n2 cells
 n2n cells
  nn cells
 2n cells

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Digital Electronics
The voltages corresponding to LOW and HIGH levels respectively are given below. Identify the voltages which correspond to positive logic system.

 5 V and 0 V
 1 V and -5 V
 0 V and 5 V
 –1.5 V and – 5 V

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Digital Electronics
Dual slope ADC has R = 1 KΩ and C = 0.22 nanofarad has charging and discharge times for some voltage is 9 ns and 3 ns respectively. The reference Voltage is 2.2 V. What is the peak voltage reached by triangular wave during charging?

 30 mV.
 300 mV.
 900 mV.
 90 mV.

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