Computer Architecture

By Sol & Abbie

  • Control Unit: Sends out signals that fetch instructions from the main memory.
  • To understand these instructions.
  • carry out the instructions that are fetched from main memory.


  • Arithmetic & Logic Unit (ALU) : Carries out the computers calculations such as addition, subtraction, multiplication.
  • Carries out the computer logical functional such as comparing values using IF, AND, <, > and WHILE.


  • Registers: are small temporary memory locations located on the processor.
  • They are used to store the data for the current instruction being processed

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