Question Discussion & Solution

MCQ

The latch or IC 74LS373 acts as

good input port

bad input port

good output port

bad output port

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Which mode allows 8/16 character multiplexed displays to be organized as dual 4-bit/single 8-bit display units?

Display Entry

Display Scan

Strobed Input

Scanned Keyboard Mode

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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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The chip 74LS245 is

bidirectional buffer

8-bit input port

one that has 8 buffers

all of the mentioned

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The device that enables the microprocessor to read data from the external devices is

printer

joystick

display

reader

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category More Microprocessor Topics

Microprocessor Basics

Classification

Input Output interfacing

Microcontroller

8085 Architecture

8086 Microprocessor

Multiprocessor Configuration

Peripheral Interface

Register Set of 8051

Serial Communication Unit

Segmentation

Paging

Instruction Set of 8086 8088

Interrupt and Stack of 8051

8051 Instruction Set

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