Learn about a CPU or Central Processing Unit in this educational video from dizzo95.
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Male Speaker: Though the Central Processing Unit or CPU looks like a single unit, it's really a good of several units. The bus, the cash, prefetch, decode, arithmetic logic and register units. Each of these pieces has a specific function in the processing of information. Processing begins when information travels through electronic pathways on the mother board and enters the CPU by way of the bus unit. The bus unit sends the data to storage areas called cashes where it's held until it is needed by other units. The prefetch unit ensures instructions are in the proper order. The decode unit breaks instructions down into simple form, so the arithmetic logic unit can read and execute them. While processing the arithmetic logic unit uses the registers as data storage areas. The control unit over sees the entire process, which takes just a fraction of the second to complete.