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Microprocessor

Microprocessor
Pick out the matching pair

 SID; SIM
 READY; RIM
 HOLD; DMA
 S0;S1;wait status

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Microprocessor
Inintel 8085A microprocessor ALE signal is made high to

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

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Microprocessor
The number of interrupt lines in 8085 is

4
2
5
3

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Microprocessor
In one’s complement 8 bit representation 11111111 represents

+0
1
-0
-1

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Microprocessor
An 8-bit microprocessor can have ………….. address lines.

 16
 8
 cannot be predicted
 32

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Microprocessor
Identify the programmable interval timer from the following

 8252
 8279
 8275
 8253

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