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Control unit
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<p>The control unit (CU) is a component of a computer's <a href="/facts/Central_processing_unit/Jxp1bqMV">central processing unit</a> (CPU) that directs the operation of the processor. A CU typically uses a <a href="/facts/Binary_decoder/rvbFldxN">binary decoder</a> to convert coded instructions into timing and control signals that direct the operation of the other units (memory, <a href="/facts/Arithmetic_logic_unit/SgIjPzSc">arithmetic logic unit</a> and input and output devices, etc.). </p><p>Most computer resources are managed by the CU. It directs the flow of data between the CPU and the other devices. <a href="/facts/John_von_Neumann/aUk6urof">John von Neumann</a> included the control unit as part of the <a href="/facts/Von_Neumann_architecture/te0yulFa">von Neumann architecture</a>. In modern computer designs, the control unit is typically an internal part of the CPU with its overall role and operation unchanged since its introduction. </p>