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The CPU
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The CPU
Carries out all the processing for the computer system
Made up of transistors (electronic switches) that combine to build logic gates
- Process data and instructions
The Clock Chip
- Uses a vibrating crystal that maintains a constant speed
- Determines the speed of the processor
- Uses a vibrating crystal that maintains a constant speed
Fetch-Decode-Execute Cycle
- Fetching new instructions from memory, decoding them, then executing them.
- As the computer switches on it will look at a specific place in ROM for the boot sequence
- Then begins the process of executing the boot sequence
- After the boot up control is passed to the OS to provide the programs for the CPU to run.
- Always stored in a specific place so that the CPU can find it
- Then begins the process of executing the boot sequence
- As the computer switches on it will look at a specific place in ROM for the boot sequence
- Fetching new instructions from memory, decoding them, then executing them.