Computer Architecture A Level Resources

A Level Computer Science: Computer architecture

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All Computer Science topics are covered, and each module comes complete with:

Classroom Presentations
Revision Notes
Activities & Quizzes
Mind Maps, Flashcards & Glossaries

Frequently Asked Questions

What is computer architecture?

Computer architecture refers to the design and organization of computer systems. It encompasses the components of a computer, such as the memory and processor, and how they are interconnected. It focuses on understanding how data is processed and executed within a computer system.

Why is computer architecture important to study?

Studying computer architecture is crucial because it helps us understand how computers work at a fundamental level. It provides insights into the structure and behavior of computer systems, enabling us to design more efficient and powerful computers. It forms the foundation for various fields, including computer science, software engineering, and hardware design.

What is the von Neumann architecture?

The von Neumann architecture, proposed by John von Neumann in 1945, is a fundamental concept in computer architecture. It suggests that both data and programs can be stored in memory. This architecture allows data to be transferred between the memory and processor during processing, enabling the execution of programs.

How is data accessed from memory?

Data is accessed from memory through a process known as memory addressing. Each location in memory is assigned a unique address. By specifying the memory address, the computer can retrieve the data stored in that location. Different addressing modes and techniques are used to efficiently access and manipulate data in memory.

How are programs executed in a computer system?

Program execution involves the processor interpreting and executing instructions sequentially. The program counter keeps track of the memory address of the next instruction to be executed. The processor fetches the instruction from memory, decodes it to understand its meaning, and then performs the necessary operations or calculations. This process continues until the program is completed.