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Microprocessor

Microprocessor
In a microprocessor based system the stack is always in

 microprocessor
 RAM
 EPROM
 ROM

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Microprocessor
In one’s complement 8 bit representation 11111111 represents

1
-0
+0
-1

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Microprocessor
Identify the programmable interval timer from the following

 8252
 8275
 8253
 8279

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Microprocessor
The instruction set of a microprocessor

 is stored inside the microprocessor
 is specified by the user
 cannot be changed by the user
 is specified by the manufacturers

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Microprocessor
While STC instruction executes,

 no flags will be affected.
 only carry flag will be affected.
 all flags will be affected.
 only carry and zero flags will be affected.

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Microprocessor
Consider the following registers: 1. Accumulator and flag register 2. B and C register 3. D and E register 4. H and L register Which of these 8-bit registers of 8085 microprocessor can be paired together to make a 16-bit register?

 2, 3 and 4
 1, 2 and 4
 1, 2 and 3
 1, 3 and 4

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