CPU

CPU

1. The purpose:

   • It is the brain of the computer.
   • It tells the programs what to do.

2. The functions:

   • Fetch
     • Collecting the command.
   • Execute
     • Performing the command.
   • Decode
     • Changing the command into binary.

3. Cache memory

   • Cache memory is closer to the CPU than RAM and ROM
   • You lose it when the computer turns off.
   • It is volitile