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control unit
It is a system of coded numbers that when read by the CPU control unit are interpreted as commands for the various operations it can perform. Each different type of CPU has a differently coded instruction set.
A CPU is made up of the control unit (CU), instruction decoding unit and an arithmetic logic unit (ALU).
A CPU is made up of the control unit (CU), instruction decoding unit and an arithmetic logic unit (ALU).
No, Control unit does By Bilco
every computer has a central processing unit or CPU in it to perform a specific task. a CPU contains: datat processing unit and control unit. the Data Processing Unit consists of Airthmatic logical unit and some registers and the control unit consist of some hardware and software to generate a control signal . whenever we want to perform some specific task we give computer an instruction or set of instructions called program. the definition of these instructions is stored in the memory of computer. these instruction are processed in a cyecel containing mainly three steps: 1.instruction fetch(taking instruction from memory) 2.instruction decode(understanding the meaning of an instruction) 3.instruction execution(performing the task0 each of above given step contains one or more steps further and these steps are called "microoperationS". on execution of instruction the specified task is done..
The control unit is one of the most important parts of a microprocessor for the reason that it is in charge of the entire process, that is the machine cycle. The CPU deals with each instruction it is given in a series of steps. Each step is repeated for each instruction. This series of steps is called the machine cycle. It involves:fetching an instruction from memory;decoding the instruction;transferring the data;executing the instruction.The control unit makes sure that all of those actions are carried out. It also manages all the other components on the CPU.
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Different parts of instruction execution happen in different places:Control Unit - fetches, decodes, and distributes decoded instructions to other units.Arithmetic Logic Unit - performs arithmetic and logic instructions on command from Control Unit.Input/Output Unit(s) - performs input/output instructions on command from Control Unit.Memory Unit - stores instructions and data, transfers them to/from other units on command from Control Unit.
the units of the CPU are :- ALU (arithmetic and logical unit) CU(control unit) the ALU handles the arthmetic operations being done by the application and the CU is responsible for handling the instruction passed by the micro processor.
The letters CPU stand for Central Processing Unit. A CPU is made up of the control unit, instruction decoding unit and an arithmeticlogic unit.
Block diagramWorking:· CPU consists of three basic units: control unit, Arithmetic Logical Unit (ALU) and memory unit.· Input is given through the input devices to CPU.· Control unit controls communication within ALU and memory unit.· Decides which circuit is to be activated.· For reading instruction it uses Fetch-execute mechanism.· Control unit gets instruction from memory.· Control unit decides what to do of that instruction and transfers it to the ALU.· ALU performs various arithmetic operations like addition, subtraction, multiplication, division and logical operations like AND, OR, NOT, NAND etc. on that instruction.· Results of ALU are stored in the memory or resistor for its further operations.· After completing the instruction, stored results are passed to the output devices.· To synchronize all these operations CPU uses its own system clock.