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MCQ

In memory-mapped scheme, the devices are viewed as

distinct I/O devices

memory locations

only input devices

only output devices

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In which type of communication, the interface gets a single byte of data from the microprocessor and sends it bit by bit to the other system serially and vice-a-versa?

Parallel Communication Interface

Serial Communication Interface

Both A and B

None of the above

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MCQ

To avoid loading during read operation, the device used is

latch

flipflop

buffer

tristate buffer

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MCQ

In memory-mapped scheme, the devices are viewed as

distinct I/O devices

memory locations

only input devices

only output devices

Discussion

MCQ

What is true about Encoded Mode?

the unit contains registers to store the keyboard, display modes

the counter internally decodes the least significant 2 bits and provides a decoded 1 out of 4 scan on SL0-SL3.

the processor is requested service only if any key is pressed, otherwise the CPU will continue with its main task.

the counter provides the binary count that is to be externally decoded to provide the scan lines for the keyboard and display.

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MCQ

Which of the following are known as Higher Address Bus?

A15 - A8

AD7 - AD0

READY

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category More Microprocessor Topics

Microprocessor Basics

Classification

Input Output interfacing

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Serial Communication Unit

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Paging

Instruction Set of 8086 8088

Interrupt and Stack of 8051

8051 Instruction Set

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