Laptops
A laptop computer is a portable computer equiped with a flat display screen and a keypad.The two main types of laptop computers are notebook and sub-notebook.
A notebook computer is a portable computer that is roughly the size of a thick notebook.They have a fairly large screen and keyboard as well a touch sensitive pad which serves as a mouse.Notebooks are easy to travel with and can use power from an electrical outlet or a rechargeable battery.

A Sub-notebook computer is about the size if a notebook computer.They have a small screen and keyboard without the mouse function.They can perform many of the functions of notebooks but not to the same complexity.

Electronic Organizors and palm talk computers are smaller,less powerful than laptop computers.They have a very small screen and keyboard and ometimes use a special pen called a stylus.They are mainly used to store appointments,addresses,phone numbers,memos and task list`

Input Devices
We need input devices to get data into the computer for processin.Some of the input devices that you may be familier with or the keyboard,the mouse and joysticks.

Keyboard
Keyboards are one of the most important input devices.A typical keyboard has a layout similar to a typewriter except foor a few additional keys.A keyboard can be used to type in data or text for use by a wide range of apppliccations on the computer.The speed and accuracy of input depends on the skill of the user.