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Microprocessor

Microprocessor
The 8085 microprocessor uses a crystal of frequency 6.25 Mhz. The T-state value is

 1280ns
 320ns
 960ns
 640ns

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Microprocessor
Which of the data transfer is not possible in microprocessor

 memory to accumulator
 memory to memory
 I/O device to accumulator
 accumulator to memory

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Microprocessor
Inintel 8085A microprocessor ALE signal is made high to

 To achieve all the functions listed above
 To latch data D0-D7 from data bus
 To disable data bus
 Enable the data bus to be used as low order address bus

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Microprocessor
In C the keywords are also called

Class words
Character words
Special words
Reserved words

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Microprocessor
Circuit A is a 1-bit adder; circuit B is a 1 bit multiplier.[Hint: Construct the truth table for the adder and the multiplier]

Circuit B has more gates than circuit A
Circuit A has the same number of gates as circuit B
Circuit A has more gates than circuit B
None of these

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Microprocessor
In 8085 microprocessor based system maximum possible number of input/output devices can be connected using I/O mapped I/O technique is

 65536
 512
 256
 64

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