Hardware

Hardware

1. The CPU

   • The CPU executes the fetch-decode-execute cycle
   • Memory
     • Stores the programs data whilst it is being run
       • ROM
         • Read Only Memory
       • RAM
         • Random Access memory
       • Cache
   • Storage
     • Stores programs and file long term even when they are not in use
       • USB memory sticks
         • Universal Serial Bus
       • SD cards
         • Usually used to store photos and videos
       • Hard drives
   • The purpose of the CPU is to process data
   • Central processing unit

2. The ALU

   • The Arithmetic and Logic Unit
     • The arithmetic performs the calculations
     • The logic part deals with the logic and comparisons

3. The control unit

   • The 3 mains jobs
     • it controls the input and output devices
     • It controls and monitors the hardware
     • controls the flow of data

4. coverison

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