The first computing device was abacus; it was developed in 600 B.C. with the passage of time scientists and technologists such as John Napeir, Blaise Pascal, Charles Xavier, Charles Babbage, Herman Hollerith, George Boole, and many others continued to work on to develop a machine that would be excellently efficient in computing problems and sums. Finally with the food of so many scientists we have been blessed with computers in the 20th century; the invention of computer brought about a revolution in the every field of life and made man possible to claim that he has taken a gigantic leap on the way to progress of humanity. Earlier computers were huge in size as a typical computer used to occupy a large room but with better technologies now we have computers that have size so small that it will take only the space in you pocket to accommodate itself. Laptops or notebooks are computers that are handheld and require less space to be placed at; they are so small in their size that they can easily place into your laps; only one user can use them at a time, use batteries to run. Like a PC a laptop computer can perform basic functions, with the weight of 2 Kg they are portable and eventually more favored by the users, they are economical and expensive, and you can order a new one as well as a used laptop for yourself. A notebook contains CPU, disk drives and memory external and internal without any electrical aid they are used by travelers, teachers and students.

Laptop is primarily designed to put in lap of the user, but it has been diagnosed that frequent placement of laptop into laps helps raise body temperature and causes raise in scrotum temperature jeopardizing sperm count, yet more research is required to determine the actual nature of threat; secondly constant putting of laptops in laps discolor the skin on thighs; then the use of small keyboard can cause RSI. To prevent such conditions the best solution is to work with them placing them at desks or surfaces.

Processors used in laptops are less powerful as compared to the processors used in desktop computers; they can be Intel Pentium M or Intel Core, from VIA it can be C7-M and C3.batteries of laptops are technically lithium ion or nickel metal hydride. The famous brands manufacturing laptops are Apple, Toshiba, Sony, Panasonic, Dell, Acer and Compaq.

There are two faces of using laptops; they have their advantages and are not at liberty from their disadvantages. On the positive side, laptops are comfortable and are portable with the less consumption of energy for they operate with the help of batteries. On the darker side, laptops can not be upgrade easily, even the laptops deigned by the same manufacturer sometimes need complete repair, you can not swapped between laptops of competing manufacturers, therefore they exhibit high cost. They are not durable as compared to desktop counterparts for their performance decrease down after a few years of work and just using a blower to wipe the dust is not the enough solution to get done with dust particles.

Laptops require more maintenance than the desktop computers as the slightest fall of liquid can cost you much to pay for by damaging the LCD screen or motherboard, so be more conscious while working with a laptop; they require more cooling system and security for a third user can hijack your confidential documents and make you inflicted with identity theft. So be conscious and use your notebook in the best sensible way to lengthen its life span.