Central Processing Unit

This lesson will introduce you to the workings of a central processing unit.

The central processing unit (CPU) takes data from the main memory, processes it, and returns the modified data into the main memory. It comprises two subunits called the control unit (CU) and the arithmetic logic unit (ALU). As the name suggests, the arithmetic logic unit processes the data, whereas the control unit controls data flow to and from the main memory.

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