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Unit 8.3 (hardware (input devices (put information into a computer, webcam…
Unit 8.3
hardware
CPU brain of computer
motherboard - curcuit board electronic elements are loacated
input devices
put information into a computer
webcam
kayboard
mouse
output
sends info to a device
speaker
moniter
earphones
storage- harrd drive hold data
power supply- provides power
fan and heat sink - protects computer from viruses
tower- encases all internal hardware
the CPU
central processing unit- the brain of the computer
clockspeed is how many times the CPU goes round the cycle pers second
measured in Gigahertz gHz
uses more energy creates more heat
handles instructions receives hardware and software
memory and storage
memory- temporary storage of your files
RAM - random access memory doesn't keep the files permanently
ROM- read only memory
flash memory
storage- stores files permanently in your computer
hard disk
memory stick
to transport files in storage
DVD
to watch films
CD
to listen to music