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Digital Electronics

Digital Electronics
The parity of the binary number 11011001 is

 same as the number of zeros
 even
 odd
 not known

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Digital Electronics
The number A = 01110000 and B = 10101111 are in 2’s complement form .Addition of above two number is

 011100001
 10101111
 11100000
 00011111

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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.
 250 Hz.
  1 KHz.
 500 Hz.

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Digital Electronics
A digital voltmeter has a read out range from 0 to 999 counts, the resolution is

 0.01 V.
  1 mV.
 1 V.
 1.1 V.

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Digital Electronics
1s Complement of 11001010 is

 11001001
 00110101
 11001011
 00110111

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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

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

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