L01 mindmap

L01 mindmap

1. Computer hardware

   • input devices
     • for a laptop
       • keyboard
       • video digitiser
       • trackball
     • for a smartphone
       • touchscreen
       • microphone
       • concept keyboard
       • digital camera
       • graphics tablet
   • output devices
     • for a smart phone
       • screen
       • speakers
     • for a laptop
       • monitor
       • printer
       • plotter
       • projector
   • communication devices
     • wireless
     • direct
     • remote
     • hard-wired

2. computer components

   • processors
     • process information at a fast rate
   • motherboard
     • holds all the main circuit together
   • storage devices
     • paper
       • cheap way of expressing data/information
       • expensive to ship lots of
       • can be easily ruined
     • optical
       • a CD or tape
         • ruined if scratched
         • stores a lengthy amount of data
     • solid state
       • an SD card
         • is very small and therefore portable
         • holds a very small amount of data
     • magnetic media
       • usb
         • small and portable
         • can store gigabytes of data
       • hard drive
         • portable
         • can store terabytes of data
   • memory
     • cache
       • enforces the RAM
     • RAM
       • volatile
       • primary data
       • unless stored in ROM, data is lost when the system is switched off
     • ROM
       • non-volatile
       • as long as data is stored on it, it won't be erased when the system switches off

3. Types of computer systems

   • desktop
   • tablet
   • smartphone
   • embedded systems
   • mainframe
   • quantum