computer

                             
computer is an electronic device,without curent passing the computer can't running.
it is a portable device,now a days it is become a special parts of human life.
there are some parts of comuter which help to run computer very efficiently.some are as follows;
There is a system of input processing&output.
Input means input the data to the computer system,which gives actual meaning.so it is factful.
Some input devices are as follows;
1.    mouse
2.    keyboard
3.    microphone
4.    pendrive

processing devices is(CPU).
                                                                       THIS UNIT process the data very systematically.and ready to represent data as output
Some output devices are as follow;
•    printer
•    plotter
•    monitor
•    projector
                    this devices are used to present the result as a output.the result ought to be meaningful&factful

                                        there are three types of memory of computer system;
1.    Primary memory
2.    Secondary memory
3.    Cache memory
                             primary memory is two types;
1.    Read only memory(ROM)
2.    Random Access Memory(RAM)
                                    There are three types of ROM;
1.    PROM(programmeable read only memory)
2.    EPROM(eraseable programmable read only memory)
3.    EEPROM(electrically programmable read only memory)