Computers are used for many purposes. The primary use of a computer is to process information in a specific sequence and to store and retrieve data as the user wishes. Computers can either be personal machines or a network of devices connected to each other. Computers are the leading source of information worldwide, second only to air transportation. Don’t miss your chance to play on the site online casino 400% bonus. You will be satisfied!
Computers are categorized into many types, including desktop computers, laptop computers, mainframe computers, mainframes, distributed systems, storage area networks (SAN) and the internet. Desktop computers are smaller than notebook computers and are ideal for regular desktop usage. Laptops are small computers that can be carried around with the user and can also be used on a laptop or desktop. Mainframe computers are large single-processor machines that run a complex series of programs in parallel. Mainframes can run applications that involve the entire computer system.
Most personal computers come with a software or hardware CD containing applications, utilities and data files. A CD may contain any one of a number of programs, like music players, word processors, spreadsheet applications, Internet programs and other utilities. Modern computers have increased in speed so that the operating systems on the CDs have become obsolete. Modern computers refer to an electronic device, such as a personal computer, laptop computers, mainframe computers, networking devices, digital cameras, video cameras and other electronic devices. Files on these devices are stored on magnetic disks or on flash memory cards.
One of the main differences between desktop computers and multi-user computers is the capability to multi-task. Desktop computers operate only one application at a time. In contrast, multi-user computers allow their users simultaneously perform multiple activities. For example, on a desktop computer, a user may browse through a web browser, listen to music, watch a movie or do some other activity simultaneously. However, in a multi-user computer, the user may be doing any of these tasks simultaneously on each and every machine.
Computers are divided into different categories according to the kind of storage that they use. Monopoly computers, which are similar to the computer in the movie, are highly specialized computers that store game information, in-process information and other forms of temporary data. Specialized applications, such as a spreadsheet or a photo image manipulation program, make use of the storage medium that the computer has. The other main classification of computers includes traditional computers, laser machines, supercomputers, memory-based machines, optical machines, personal computers and network computers.
The storage mediums used by personal computers are usually fixed. Electronic devices, such as digital cameras and printers, are removable. Optical drives, used in optical printers, are a form of storage device that is fixed to the printer. Media storage devices are used for data storage on a personal computer. Network attached service, or NAS, is a type of storage device that enables a user to access the stored data from another computer. Computer networking, or computer network, refer to the set of processes that allow computers to talk to one another over a local area network, or LAN, of multiple computers.
Computers can be divided further, according to their processing power and speed. They can either be desktop computers, also known as personal computers, or notebook computers. Desktop computers are the typical personal computers that we use every day; they include desktops, laptops and netbooks. Notebook computers are smaller than desktop computers, and they are designed to be used with portable computing devices such as media player equipment.
Hand-held computers, such as cell phones, are another example of a smaller computer system. Hand held devices are referred to as portable computers, because they can easily fit in a pocket, purse or back pocket. Mini notebooks have the same basic operating system, input devices and memory capacity as a full-sized notebook computer. Mini notebooks have screen sizes similar to that of an item about the size of a book. Pocket computers, as their name suggests, are small enough to fit into a pocket or purse and are generally considered to be in between mini notebook computers and handheld computers.