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Microprocessor

Microprocessor
The word size of 8085 microprocessor is

 8-bit
 20-bit
 4-bit
 16-bit

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Microprocessor
Internet is a worldwide network of computers where most of the information is freely available.

False
True

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Microprocessor
Let the content of register C be 00000000 before the instruction DCR C is executed. The content of register C after the after the execution of this instruction will be

 00000001
 11111111
 00000000
 None

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Microprocessor
Pick up the programmable interrupt controller from the following

 8259
 8275
 8257
 8279

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Microprocessor
While using a frequency counter for measuring frequency, two modes of measurement are possible: Period time 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 Khz.
 8 Mhz.
 1Khz.
 2 Mhz.

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Microprocessor
A microprocessor without the interrupt facility

 is not useful for process control system
 cannot be interfaced with any I/O devices
 cannot be used for DMA operation
 is best suited for process control system

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