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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
- Process data and
instructions
- The Clock Chip
- Uses a vibrating crystal that
maintains a constant speed
- Determines
the speed of
the processor
- 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.
- 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.
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