Computer for individual users

Computers for Individual Users

Most computers are meant to be used by only one person at a time. Such computers are often

shared by several people (such as those 1n our centre' s computer lab), but only one user can work with the machine at any given moment.

The six primary types of computers in this category are
* Desktop computers
* Workstations
* Notebook computers
* Tablet computers
* Handheld computers
* Smart phones

Introduction to Computers

Desktop computers :
The most common type of personal computer is the desktop computer-a PC that  designed to sit on (or under) a desk or table. These are the systems you see all around you, in schools, homes, and offices, and they are the main focus of this material

Today's desktop computers are far more powerful than those of just a few years ago, and are used for an amazing array of tasks. Not only do these machines enable people to do theirjobs with greater ease and efficiency, but they can be used to communicate, produce music, edit photographs and videos, play sophisticated games, and much more.

Workstations:
A workstation is a specialized; single-user computer that typically c has more power and features than a standard desktop PC . These machines are popular among scientists, engineers, and

animators who need a system with greater-than-average speed and the power to perform sophisticated tasks. Workstations often have m large, high-resolution monitors and accelerated graphics-handling capabilities, making them suitable for advanced architectural or engineering design, modeling, animation, and video editing. Note that due to rapid technological advancement, the difference between desktop and workstation are very thin or almost invisible.

Notebook Computers:
Notebook computers, as their name implies, approximate the shape of an 8.5-by inch notebook and easily lit inside a briefcase. Because people frequently set these devices on their lap, they are also called laptop computers.
Notebook  computers can operate on alternating current or special batteries. These amazing devices generally weigh less than eight pounds, and some even weigh less than three pounds!

use, the computer's lid is raised to reveal a thin monitor and a keyboard. When not in use, the device folds up for easy storage. Notebooks are fully functional microcomputers; people who use them need the power of a full-size desktop computer wherever they go  Because of their portability, notebook PCs fall into a category of devices called mobile computers-systems small enough to be carried by their user. 

Tablet PCs:

The tablet PC is the newest development in portable, full-featured computers. Tablet PCs offer all the functionality of a notebook PC, but they are lighter and can accept input from a . special pen-called a stylus or a digital pen-that is used to tap or who directly on the screen. Many tablet PCs also have a built-in

microphone and special software that accepts input from the user’s voice.

Handheld PCs:
Handheld personal computers are computing devices small enough to fit in your hand . A popular type of handheld computer is the personal digital assistant (PDA). A PDA is no larger than a small appointment book and is 'normally used for special applications, such as taking notes, displaying telephone numbers and addresses, and keeping track of dates or agendas. Many PDAs let the user access the Internet through a wireless

connection, and several models offer features such as cellular telephones, cameras, music players, and global positioning systems.

Smart Phones:
Some cellular phones double as miniature PCs . Because these phones offer advanced features not typically found in cellular phones, they are sometimes called smart phones. These features can include Web and e-mail access, special software such as personal organisers, or special hardware such as digital cameras or music players. Some models even break in half to reveal a miniature keyboard.