Pearson Edexcel (2020) Archives - Page 7 of 14

Define Secondary Storage (1 mark)

Write a brief explanation of what secondary storage is.

Describe how data is stored on optical storage media.

Explain why secondary storage is essential in a computer system despite the presence of primary storage (RAM).

Define an embedded system.

Differentiate between the roles of the address bus, data bus, and control bus in the computer’s operation.

Describe the purpose of the CPU’s registers during the fetch-decode-execute cycle.

Explain the function of the CPU and its components within the fetch-decode-execute cycle.

What are the roles of the clock, address bus, data bus, and control bus in the fetch-decode-execute cycle?

Explain how the main memory interacts with the CPU during the fetch-decode-execute cycle.

Describe a situation where lossy compression would be more appropriate than lossless compression.