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Adding CPU block diagram I created
[[Image:Cpu.gif|frame|right|<center>Block Diagram of a simple CPU</center>]]
A '''Central Processing Unit''' (CPU) is the main control mechanism of a [[computer]], containing control logic, registers, and arithmetic logic unit (ALU) as well as a memory interface. Some CPUs implement additional functionality, but often other capabilities are provided through peripheral processors that handle such things as input/output (I/O), floating-point [[arithmetic]], and [[vector]] processing. All computers contain at least one CPU, but some contemporary computers contain over 1,000.
A '''Central Processing Unit''' (CPU) is the main control mechanism of a [[computer]], containing control logic, registers, and arithmetic logic unit (ALU) as well as a memory interface. Some CPUs implement additional functionality, but often other capabilities are provided through peripheral processors that handle such things as input/output (I/O), floating-point [[arithmetic]], and [[vector]] processing. All computers contain at least one CPU, but some contemporary computers contain over 1,000.