This image shows how we use input technologies, such as keyboards and mouses, to input letters into the system unit. The unit then uses processing technologies to convert the letters into binary code, or machine language, so that the CPU can then interpret it. The CPU uses bytes, which are composed of 8 bits, to understand each letter. The ALU then calculates the bits into ASCII, which is the language that we understand. Then the results of the calculations are stored in the control unit and are visible through output technologies.
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