A notebook computer (also known as a laptop computer) is a small mobile personal computer, usually weighing around from 1 to 3 kilograms (2 to 7 pounds). Notebooks smaller than an A4 sheet of paper and weighing around 1 kg are sometimes called sub-notebooks and those weighing around 5 kg a desknote (desktop/notebook). Computers larger than PDAs but smaller than notebooks are also sometimes called "palmtops". Laptops usually run on batteries and can also run on main power through a supplied adapter.
Computer hardware and software that is attached to a network and which automatically stores, processes and transmits data or information that is generally accessed by many people using client programs. A server is a Computer that provides service for other computers connected to it via a network. The most common example is a file server that has a local disk and services requests from remote clients to read and write files on that disk using the Network File System (NFS) protocol or network operating system software.
A Tablet PC is a computer shaped in the form of a notebook except with the capabilities of being written on through the use of digitizing tablet technology or a touch screen. A user can use a stylus and operate the computer without having to have a keyboard or mouse.
A personal computer with a Central Processing Unit, or CPU (containing a hard drive, RAM memory, a floppy disk drive, and in some cases a CD-ROM drive), a monitor, keyboard, and mouse. If a workstation were disconnected from the network, it could still operate as an independent computer, in contrast to dumb terminals which are capable only of displaying information sent from a mainframe computer.
A workstation is a client computer (stand alone machine) on a (Local Area Network) or Wide Area Network that is used to run applications and is connected to a server from which it obtains data shared with other computers. Workstation is also used to describe a high-performance PC that uses a high-performance microprocessor and proprietary architecture to create what some call an "open" system.
