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Microprocessor

Microprocessor
Identify the non-programmable interfacing device from the following

 8295.
 8257.
 8255.
 8212.

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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?

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

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Microprocessor
A bus connected between the CPU and main memory that permits transfer of information between main memory and the CPU is known as

 DMA bus
 Address bus
 Memory bus
 Control bus

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Microprocessor
How many T-states are required for execution of OUT 80H instruction?

 13
 7
 16
 10

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Microprocessor
The five flags in 8085 are designated as

D, Z, S, P, AC
Z, C, S, P, AC
Z, CY, S, D, AC
Z, CY, S, P and AC

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Microprocessor
In 8085 which addressing mode is also called inherent addressing?

Implicit
Register
Immediate
Direct

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