Tuesday, June 22, 2010 12:28 PM
Labels: CPU , Data , hard disk , Hardware , Keyboard , Memory , monitor , mouse , pen drive , printer , Software
Hello Readers,
Functionality of Computer
By the way we have understood about the term computer and basic structure, parts of computer. Overall by this we get the rough idea about the computer. Today we shall learn about the functioning of computer.
Before starting to functioning of computer, lets understand some basic terms generally used:
- Input: Putting or providing the information.
- Information/instruction: It is a piece of sentences or commands provided to computer to process.
- Process: calculating, drafting the information in prescribed form, formulating the information is known as processing the information
- Data: Data is processed information.
- Output: Output is final result received after processing.
I have already said that Lets consider an example of manufacturing unit structure, the same information is provided to computer for processing. As we know the basic structure shown in sketch contains five basic units. Now lets see the functionality of each unit-
- Input Device: The is the basic part of computer, through which we provide the information. The common examples of Input Device are KeyBoard, Mouse. Information is group of sentences or commands provided to computer to process. Information is provided in higher level language (English) to Computer via Input Device.
- CPU (Central Processing Unit): CPU is the main electronic part of computer, it mainly consists of hardware mechanism like mother board, microprocessor, memory and so on. CPU is bifurcated into 3 parts,
- Control Unit is important part, which keeps control over all the parts of computer. This unit receives the information from user, analyse it and stores in Memory Unit, further the same information is sent to ALU (Arithmetic and logic Unit) for processing as per instructions received, again ALU returns back the processed data to control unit and as per instruction Control unit forwards the data to output device or storage unit.
- Storage Unit or Memory Unit: Storage Units primarily consists two part as like human brain parts - short term memory and long term memory, Primary Storage unit and other is Secondary Storage unit. Primary storage unit is used as short term memory, which is used only at the time of processing or works till the computer is in power on mode. The data stored in this memory is for shorter period till computer is in power on mode and once computer is switched off, no more data can be retrieved. example is RAM - Random Access Memory. Secondary Storage Unit: The data stored in secondary storage unit is saved for longer period and can be retrieved again and again for longer period. The stored data can be edited or changed whenever required. example is Hard Disc, CD/DVD, Pen-drive, Floppy Diskette.
- Output Device: The processed data is received in printed form or visible on the monitor, and can be saved on Hard Disc, CD/DVD, Pen-drive, Floppy Diskette. examples are Monitor, Printer, plotter and so on.
Above is the basic functionality of any base computer.
Learn with interest and make use of it...
Learn with interest and make use of it...
We shall discuss on-
How information is provided and how it is processed?
What is Hardware and Software? in our next post, please hung up for the information.
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