Desktops and Towers

Desktop computers are usually placed on desks or tables, hence the name desktop. The  best place for a tower computer is under the desk. Because the difference between desktops and towers is so insignificant, most people refer to all stationary computers as desktops. You can spot desktops in many office environments.

Laptops and Notebooks

Laptops are small portable computers weighinh a few kilograms. Modern laptops are often called notebook computers becayse of their small size. Notebooks aretypically 3 inches or less inthickness. Well-known manufacturers of laptops and notebooks. Laptops and notebooks are equipped with a Liquid Crystal Display screen and can operate on batteries, thus providing mobility to users.LCD is a type of display used in digital watches, only on a much smaller scale.

Handheld

Handheld computers are small portable computers designed to fit your pocket. These computers are generally not as powerful as desktop or notebooks, but neverthless are useful for specific tasks. Handheld computer are designed to facilitate everyday functions, such asusing a calendar and keeping an address book. They can be used to maintain notes, task list and details of appointment.

Tablet PCs

A Tablet PC is a type of notebook computer. It allows the user to take notes on the screen using a special pen. The user’s handwritten content can be edited and then shared with others via e-mail.