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Hardware 2015

1. CPU

   • Fetch execute cycle
     • 1. Fetches the instruction
     • 2. decodes/understands the instruction
     • 3. Carries out the instruction
   • The control unit
     • Uses electrical signals to direct the system to execute stored programs
   • Arithmetic logic unit
     • The system that carries out the arithmetic and logical operation
   • Clock Speed
     • the speed the CPU carries out the fetch execute cycle per second
   • Cache Memory
     • Stores frequently used data
     • Volatile
     • A lot quicker to uses than RAM or the hard drive