Topic 2

Topic 2

1. input and output

   • input
     • sends signals to the computer
     • devices
       • mouse and keyboard
       • disabled
         • braille keyboard
   • output
     • displays the output from the computer
     • devices
       • monitor
       • keyboard

2. secondary storage

   • non volatile storage space
   • is sometimes called auxiliary memory
   • additional storage facilities added to a computer system to store data and programs
   • stores •The operating system •Any programs and applications that the user installs onto the computer. •Any files and documents containing the user’s data

3. ROM and RAM

   • Memory is the area where the computer stores or remembers data
   • rom
     • stores the bios and is ran everytime the system starts up
   • ram
     • volatile
       • loses everything when its shut dowm
     • runs the OS