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Digital Electronics

Digital Electronics
For a code to be self-complementing, the sum of all its weights must be

 6
 10
 9
 12

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Digital Electronics
What is mean by FPU

 floating parallel universal
 floating point universal
 floating parallel unit
 floating point unit

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Digital Electronics
A combinational circuit can be designed using only

 AND gates
 OR and X-NOR gates
 OR gates
 NOR gates

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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?

 300 mV.
 900 mV.
 30 mV.
 90 mV.

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Digital Electronics
A new Binary Coded Pantry (BCP) number system is proposed in which every digit of a base-5 number is represented by its corresponding 3-bit binary code. For example, the base-5 number 24 will be represented by its BCP code 010100. In this numbering system,the BCP code 100010011001 corresponds to the following number in base-5 system

 423
 1324
 2201
 4231

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Digital Electronics
A computer has a word length of 8 bits (including sign). It is required to determine the range of integers that can be stored in the computer. If 2’s complement is used to represent the numbers, then the range will be

 -128 to 128
 -128 to 127
 -256 to 255
 -256 to 256

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