What you'll learn
The components of a computer and its software.
Key ideas
- The CPU: the ALU (calculations) and control unit (coordination).
- RAM (volatile) vs ROM (non-volatile); secondary storage for long-term data.
- System software (OS) vs application software.
Exam tips
- Learn the role of each CPU part.
- Distinguish primary from secondary storage.
Common mistakes
- Confusing RAM and ROM.
- Mixing up system and application software.