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Digital Electronics

Digital Electronics
(44)8 in BCD 8421 code is

 01100011
 01000100
 00110110
 00100100

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Digital Electronics
The most suitable gate for comparing two bits is

 X-OR
 NAND
 AND
 OR

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Digital Electronics
The NAND-NAND realization is equivalent to

 AND-OR realization
 AND-NOT realization
 OR-AND realization
 NOT-OR realization

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Digital Electronics
The binary number designations of the rows and columns of the K-map are in

 XS-3 code
 binary code
 Gray code
 BCD code

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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

 1324
 2201
 4231
 423

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Digital Electronics
While using a frequency counter for measuring frequency, two modes of measurement are possible. 1. Period time 2. Frequency mode There is a ‘cross-over frequency’ below which the period mode is preferred. Assuming the crystal oscillator frequency to be 4Mhz the crossover frequency is given by

 2 Mhz
 2 Khz
 8 Mhz
 1 Khz

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