you may store data and information safe in a computer for further use when you swith on the computer the stored data can be loaded onto the comuter main memory you can wo;rk again and o;n that file after opening it. before learning how DOS make data flow from the disk it is necessary to learn how data is stored the information given to; the computer is saved in a file this file is identified with a unique file name a three-character extension describe which software is used to make and read this file in this chapter the following topics will be discussed File are created in the software in which you are currentlly working there are different method tio create file in different software .if you are working in DOS then COPY CON command is used to create a file .Name of the file which you want to create a file HELLO then;--1. Go to DOS prompt