I/O Systems
Input/Output (I/O) systems facilitate communication between a computer and peripheral devices, with the operating system managing these processes. Efficient I/O management is essential for system performance. Key components include hardware interfaces, device drivers, and software strategies for data transfer, all of which affect overall system responsiveness and concurrency.
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Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- I/O systems function as a critical bridge between CPU and external devices, enabling interaction with various peripherals.
- The roles of device drivers include hardware abstraction, control, and event handling, allowing standardized communication between the OS and hardware.
- Different I/O software principles such as Programmed I/O, Interrupt-Driven I/O, and Direct Memory Access (DMA) illustrate varying levels of CPU involvement during data transfer.
Key Concepts
- -- I/O Hardware
- The physical components of a computer that facilitate communication and data transfer between internal components and peripheral devices.
- -- Device Driver
- Software interface that allows the operating system to communicate with and control hardware devices, providing necessary commands and managing device-specific operations.
- -- DMA (Direct Memory Access)
- An efficient technique that allows peripheral devices to transfer data directly to memory without CPU intervention, improving system performance.
- -- Disk Scheduling
- Algorithms designed to manage and optimize the order of disk I/O requests, minimizing seek times and improving system throughput.
Additional Learning Materials
Supplementary resources to enhance your learning experience.