How to study about computer and its soft waves and its parts.

   what is computer                                                

                             A computer is electronic machine it can be     programmed to accept data process data into useful              information and store it for late use.a computer system consist of hardware and software 

                          

 software:-

• computer process data according to the set instruction give to its .the set of instruction give to the compound to specific task is is called software.

Types of software:-

• system software:-A  program or set of that is especially desgined to control d/f operations of the computer system is know as .i/e operating system,utility program and devices driver.

• application softwave:-a program or set of that is especially desgined to solve the specific problems of users are called.i/e commerical,scienctific,games, multimedia,

Hardware:-

the physical compound of the computer is called hardware i.e input/output devices as keyboard ,mouse, moniter,cpu,memery unit.

hardware  devices:-

1. input devices:-keyboard,mouse,micro phone etc
2. output device:-moniter printer,speaker etc
3. main memery:-ram and rom
4. secondary memery:-hard disk,usb driver,floppy disk
5. network devices:-modem, bridges,router 

compound of computer :-

CPU:-

stands for central processing unit.it is most important compound.it is called brain of computer.cpu as know as processor.

Types of CPU:-

1. control unit:-it control all kind of operation of computer.
2. ALU:-stands for arithmetic and logical unit.it perform addtion, substrcing,mutiply,and division and compares the numerical data as well as alphabetic.