Summary

Congratulations, you have successfully completed the topic on the “Memory and Instructions”. In this chapter you have learnt about:

• The two different types of computer memory - primary and secondary memory and their roles in storing and accessing data and instructions.
• The role of primary and secondary memory in storing and accessing data and instructions within a computer system.
• The function and importance of cache memory in improving system performance.
  
• The different levels of cache and their impact on data access speed.
• The concept of the instruction cycle and its stages (fetch, decode, execute, store), and how the instructions are processed and executed by the CPU.