About Lesson
The instruction execution cycle is the process by which the CPU executes instructions. It consists of the following steps:
6.1 Fetch-Decode-Execute Cycle
- Fetch: The CPU fetches the next instruction from memory.
- Decode: The instruction is decoded to determine what operation needs to be performed.
- Execute: The operation is executed, and results are stored in registers or memory.
6.2 Types of Instructions
- Instructions can vary depending on the processor’s architecture, but common types include:
- Data Movement Instructions: Transfer data between registers, memory, and I/O devices.
- Arithmetic Instructions: Perform mathematical operations (addition, subtraction, etc.).
- Control Instructions: Control the flow of execution, such as branch or jump instructions.