Revison - The CPU

Revison - The CPU

1. The purpose of the CPU is to Fetch Decode Execute, meaning it collects data, de-codes it so it understand than executes it onto an output device, for example: The moniotor

2. Clock Speeds

   • Clock speed is measured in Hertz ( Hz ) This is how many cycles the CPu is doing per second. The higher the clock speed, the faster the CPU runs
   • GigaHertz = 1000000000 cycles
   • MegaHertz = 1000000 cycles
   • KiloHertz = 1000
   • TerrorHertz = 1000000000000

3. Dual and Quad processors

   • Dual processors means that there's two CPU processors, meaning that the two 'brains' will work spontaneously ( At the same time ) Doing twice as much cycles, making the CPu faster
   • Quad processors means that there's 4, meaning it'll be doing 4 times as much cycles

4. Reasons for choosing higher or lower clock speeds

   • Higher
     • Advantage(s)
       • Faster performance
     • Disadvantage(s)
       • Runs hotter
       • Consumes more energy
   • Lower
     • Advantages
       • Less costly
       • Consumes less energy
       • Needs less power
     • Disadvantages
       • Slower performace