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COAR chap5

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Questions and Answers

Which of the following is a type of storage device used for input and output operations?

Hard disk drive

Optical drive

Flash drive

All of the above (correct)

Decoding principle for memory and input/output device are ___. Microcontroller use signal _ to identify which one of them to access.

different, IO/M

the same, IO/M (correct)

opposite, WR/RD

the same, WR/RD

What is the main advantage of using DMA in latest computer systems?

It reduces the load on the CPU. (correct)

It increases the speed of the CPU.

It reduces the amount of memory required.

It distributes system resources equally between devices.

Refer to the diagram below which shows an IO device and its interface to an 8-bit microcontroller. What is the type and address of the IO device?

<p>output device, address: 0x06</p> Signup and view all the answers

Example to DMA-enabled devices are ________.

<p>All of the above</p> Signup and view all the answers

Study Notes

Input/Output Operations

I/O devices are a type of storage device used for input and output operations.

Memory and Input/Output Devices

Decoding principle for memory and input/output devices is used to identify and access devices.
Microcontrollers use signal lines to identify which device to access.

Advantages of DMA

The main advantage of using DMA (Direct Memory Access) in latest computer systems is to improve performance and efficiency.

I/O Device Interface

The diagram shows an I/O device and its interface to an 8-bit microcontroller, which provides details about the type and address of the I/O device.

DMA-Enabled Devices

Examples of DMA-enabled devices include _____.

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Description

Learn about the different types of storage devices used for input and output operations. Test your knowledge and find out how well you understand the basics of computer hardware.