A-Level Computer Science Hardware Revision Notes

• 1The main components of computer hardware include the CPU, memory, storage, and input/output devices.
• 2The CPU (Central Processing Unit) is often referred to as the brain of the computer, executing instructions and processing data.
• 3Memory types include RAM (volatile) and ROM (non-volatile), each serving different purposes in data storage and retrieval.
• 4Storage devices can be magnetic (HDD) or solid-state (SSD), with varying speeds and capacities.
• 5Input and output devices facilitate user interaction with the computer, including keyboards, mice, monitors, and printers.

Computer hardware is the tangible parts of a computer that you can touch and see. This includes the processor, memory, hard drives, and devices like keyboards and monitors. Each piece has a specific role, like the CPU doing calculations, while RAM temporarily holds data for quick access. Understanding these parts helps you know how computers work together to perform tasks.