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Computer

1. Central Processing unit

   • CPU is the brain of the computer it's where most of the calculations take place
     • Arithmetic logic unit (ALU)
       • The arithmetic logic unit performs simple logic and arithmetic questions
     • Control unit (CU)
       • The control unit makes sure everything works together.
     • Cache
       • The cache serves as high-speed memory where instructions can be copied to and retrieved
     • Clock speed
       • In a computer, clock speed refers to the number of pulses per second generated by an oscillator that sets the tempo for the processor. Clock speed is usually measured in MHz (megahertz, or millions of pulses per second) or GHz (gigahertz, or billions of pulses per second)