The role of computer is vast. In our modern world most of our duties are replaced by computers. Here I have given most important roles of computer in brief. The use of information technology (IT) is well recognized, as it become must for the survival of business houses with grouping information technology trends. The flow of information has changed the way we live in today world. Information is the backbone of every system. Every morning when we read a newspaper having out so much information,we came to know the latest happenings in the world.
All our Railways, Air and even Sea networks are connected with the help of IT. The information is very vital for running these smoothly. Even if we do not have information for one minute it may results into a big disaster.
We can take the Role of Computer in banking. It is very easy to transact any amount of money from one part of world to other with help of e-commerce. we can purchase anything online with help of debit and credit cards. This can made our lives more and more simple only with the use of computers.
Now a days if you want to buy something and if we are not getting it nearby store we can simply search for that on internet and then order it one the internet. We will get it delivered at our doorstep with just few clicks of mouse. Similarly if we want to travel around the world we can book airline tickets online and even book rooms for hotel (of course at competitive rates)
So everywhere computer or PC plays a vital role in managing all the systems semi-automatically or fully automatically.