“Computers are machines that are used to work on raw data into information. Computers execute tasks according to instructions or programs. Having produced the first computer which used electricity in 1940’s, it was unusually large that it required to be operated by more than one people. They consumed a lot of energy, and they were also acutely slow. However, in comparison with nowadays, computers are remarkably fast in processing speed, not large and are operable by one person. Others can even fit in pockets which are hand held like tablets and even laptop or notebooks which are portable.
Desktop computers: as the name suggests, this is a type of computer that is designed to be used on a flat surface of a table or a desk. Desktop computers are made up of separate peripherals or devices. The main components of the desktop computers being the system unit, which is usually rectangular in shape. It is usually placed on or underneath a desk. Other peripherals include, the monitor, mouse, and keyboard, and cables that connect them to the system unit.
Laptop computers: these are computers which are light in weight, are mobile and can be taken along to anywhere since they have in built batteries. Laptop computers also known as notebook are small in size since they combine the screen, the keyboard, and the mouse in one case. They are unique in they are folded after use.
Tablets: these personal computers that combine the characteristics of a handheld computers and laptops. Tablets use a pen to write or draw pictures on the screen. Some even have keyboards that are folded and pivoted under the screen. Since you can write on its screen, it also possible to covert personal handwriting into typed text.
When someone decides that he/she needs a computer there are various aspects of the computer one should consider. This choice is determined by the buyer after consideration of