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The operating system at the center

The operating system at the center

Layered diagram showing users, applications, the operating system, and hardware with arrows showing the OS between apps and devices

An operating system, or OS, is systems software that manages the computer's hardware and software resources. It also provides an interface between the user, applications and the hardware.

Operating systems Lesson

  1. GCSE
  2. /Computer Science
  3. /Operating systems

Step-by-step lessons on OCR GCSE Computer Science Operating systems. Each one builds up to exam-style questions. Build strong foundations in binary, logic and core programming constructs before moving on to the more complex algorithm design and evaluation questions.

Lessons