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Questions and Answers
Which of the following is a type of storage device used for input and output operations?
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.
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?
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?
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?
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Example to DMA-enabled devices are ________.
Example to DMA-enabled devices are ________.
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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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