20559018
Description
Mind Map by Maddie Bellew, updated more than 1 year ago
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Created by Maddie Bellew
almost 6 years ago
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CPU
- The brain of the
computer
- Fetch, decode, execute cycle
- Fetching new instructions from
memory, decoding them and then
executing them
- Fetch: the information is
moved.
- The cycle repeats itself until the
computer is switched off.
- The fetches information from
the RAM and sent to the CPU
to be decoded and then
executed
- Decode: the information is understood.
- Executed: it is carried out.
- Fetching new instructions from
memory, decoding them and then
executing them
- Central processor unit
- Components of a computer
- CPU: processes
information
- Fan: cools the components that might
get hot
- Motherboard: connects all
components
- Power supply: supplies
power to the components
- RAM: stores data
while powered
- Optical drive: reads and writes data stored
on compact drives
- Hard drive: reads and writes
data onto metal platters
- Floppy drive: reads and writes information
from floppy discs
- Graphics card: Controls
what comes up on screen
and is populalr with
gamers and people who
use screens
- Bootstrap loader: a
programme in the ROM
which allows the
computer to start up
properly.
- CPU: processes
information
- 1 instruction is carried out per second
- 1 hertz=1 second=1 cycle ,1 kilohertz=1 second=1 thousand cycles, 1 megahertz=1 second=1 million
cycles, 1 gigahertz=1 second=1billion cycles
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