OCR A-Level Computer Science

1.1.1. The Fetch – Decode – Execute Cycle

1.1.2. The Architecture inside the CPU

1.1.3. The Registers

1.1.4. How do the registers work

1.1.5. The factors affecting the performance of the CPU

1.1.6. Pipelining

1.1.7. Von Neumann, Harvard and Contemporary Processor Architectures

1.2.1. Types of processor

1.3.1. Input and Output Devices

1.3.2. Primary Memory and Secondary Storage

2.1.1. The Operating System

2.1.2. Function and Purpose of the Operating System

2.1.3. Multitasking: Interrupts and Scheduling

2.1.4. Types of Operating Systems

2.1.5. BIOS

2.1.6. Device drivers

2.1.7. Virtual machines

2.2.1. Application Generation