CSC-021beginner

Input, Output & Devices: Core Concepts

Input/output connects computation with users, networks, sensors, storage, and actuators. I/O concepts explain keyboards, displays, disks, cameras, sensors, networks, USB peripherals, high-speed accelerators, embedded systems, and why asynchronous programming is common.

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Input, Output & Devices: Core Concepts

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CSC-020Operating Systems: Systems, Limits & Advanced Connections→

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CSC-022Input, Output & Devices: Components & Representation→

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Input/output connects computation with users, networks, sensors, storage, and actuators.

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The CPU can communicate through memory-mapped or port-mapped registers, while interrupts notify the OS of events and DMA transfers blocks without requiring the CPU to copy every byte.

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Device logs, interrupt counters, bus traces, throughput benchmarks, latency measurements, and driver behavior reveal the I/O pipeline.