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Question :
How would I describe the CPU (central processing unit) component of a computer system.

Posted by: das on 11/22/2008

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Category Hardware Interview Questions
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Added on 11/22/2008
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Answers:

CPU is the unit in the computer system where the actual processing of the data takes place and also it controls the flow of the data.



Posted by: g.vijetha    

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A central processing unit (CPU) is a machine that can execute computer programs.



Posted by: Qutubuddin Hassan    

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CPU is referred as the heart of the computer. It performs I/O & ALU operations.



Posted by: arunkumar    

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CPU-central processing unit

It is the heart of the computer.
It controls the flow of data.



Posted by: swetha    

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cpu is heart of the system it control the machine.and proceeing the program .central procossing unit



Posted by: ashray deshpande    

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CPU is heart of computer.
Control Processing Unit
It does all logical/mathematical calculations(processing) which a user is ordered(inputs.
It controls all data flows.



Posted by: Bhupendra    

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The process of selecting the next job that will run on the CPU belongs to the short-term or CPU scheduler. The CPU scheduler can only pick from the jobs that are already in memory and ready to go. The scheduler works in cooperation with the interrupt system.
? The scheduler assigns the CPU to perform computation on behalf of a particular process or thread within a process.

? CPU can be "borrowed" from its current process by an interrupt. It is under the control of external devices not scheduler. Interrupts can be disabled for a short time.
? When a process or thread requests an I/O transfer, it normally becomes ineligible to use the CPU until the transfer is complete. This means that the scheduler will have to choose a new process or a new thread within the same process to use the CPU.
? The process or thread that requested the I/O again becomes eligible to use the CPU when the I/O transfer is complete.

CPU I/O Burst Cycle
The execution of a process consists of an alternation of CPU bursts and I/O bursts. A process begins and ends with a CPU burst. In between, CPU activity is suspended whenever an I/O operation is needed.
? If the CPU bursts are relatively short compared to the I/O bursts, then the process is said to be I/O bound. For example, a typical data processing task involves reading a record, some minimal computation and writing a record.
? If CPU bursts are relatively long compared to I/O bursts, a process is said to be CPU bound. A number crunching task involves an I/O burst to read parameters. A very long CPU burst and another I/O burst is required to write results.



Posted by: Hassan Jahangir    

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CPU Means central processing unit & Control process unit. main cpu theme is it works in ASCII Binari language. The principle of cpu is ALU (Arthimatic Logic Unit). this invented at 1970 series ending.



Posted by: RAJESH    

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"processor is d heart " you people are giving such a foolish answers, you asshole dont u ve any other job , just fuck off........



Posted by: sreekanth    

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Cpu(central processing unit)



Posted by: Oseni nurudeen    

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Cpu(central processing unit). This is the brian of the computer.



Posted by: Oseni nurudeen    

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