The operating system manages certain aspects of the
computer so the users doesn't have to,it can have a
graphical interface (GUI) and/or a command line
interface (CLUI)
Building PC
Keywords
RAM
Random Access Memory
Ram allows data to be read and written.
Optical Drive
Memory stick
CD's
DVD's
It uses laser to read data on a CD or DVD
ROM
Read Only Memory
It contains instructions that the computer to uses to boot up
mother board
Allows different components to
commmunicate with each
other.
Hard Drive
Is what stores all of your data( files and folders).
CMOS batery
The battery that sets the time and date on the computer and when you take it out it goes back to defult
Input Devices
Mouse
Keyboard
Microphone
output Devices
moniter
Printer
Speakers
Utility Software
Anti-Virus
Finds and quarantines virus in the computer the user then
gets the choice on whether they want to delete it or not
Disk Fragmenter
Firewall
Automatic updates
Network topolohgies
ring network
Sends one data packet one way round to the
correct nodes. However it cannot go the
opposite way in a ring network.
The ring nwtwork is the cheeper and
easiest to set up out of the three networks.
If one nodes is removed from the network then the
whole network will break down because it cant
pass the gap between the node that is broken.
Network topologies
Bus network
Advantages
If one node breaks the
system will still work as if
the node didn't break
Disadvantages
Custom Written
Advantages
If there is any bugs with it the user can
tell the people who made it that there is
something wrong with it.
It is designed only for the
people who want it.
Disadvantages
Really expensive
Takes time to make because you have to make sure
that it is working properly before they can give it to
the person who wants it.