In chapter one I learned there are different classes of computers. The different types of computers are: Mainframes, Servers, Desktops, Workstations, Laptops, and Handheld portable devices. Each type of computer has been designed with a particular purpose in mind, such as portable access to information, processing of detailed graphics, and so on.
Mainframes are large centralized computers. They are found in sizable enterprises and purchased through specialized resellers.
Servers are high-performance computers used in businesses and other organizations to provide services to many end users or clients. Servers have multiple central processing units, large amounts of random-access memory, and multiple high-capacity disk drives that provide very fast information retrieval.
There are three types of servers. They are: Standalone, Rack-mounted, and Blade.
Standalone Servers are flexibility in selection of internal components but take up a lot of floor space.
Rack-mounted Servers save floor space when racks are available.
Blade Servers are the highest concentration of computing power in the smallest amount of space.
Desktops computers are better known as personal computers or simply PCs. They are designed as end-user devices. Desktop computers have many options and capabilities. They can be customized depending on the person using it. They have a wide variety of cases, power supplies, hard drives, video cards, monitors, and other components. They can also have many different connection types, video options, and a wide array of supported peripherals.
Workstations are another end-user computing device. They are very similar to the desktop computer. Desktop and Workstations look similar but Workstations are usually high-powered machines designed for specialized, high-end applications. CAD, 3-D modeling and graphics design, video animation, and virtual reality simulation are normally run on workstations.
Laptops and Notebook is the same thing. They are comparable to desktops in usage and processing capability but, they are portable devices built to be lightweight and use less power. Laptops computers normally have a limited number of configurations available and are not as easily upgradeable as desktop computers.
Portable Devices vary in size, power, and graphics capability. Some Portable Devices are: Laptop or notebook PC, Tablet PC, Pocket PC, Personal Digital Assistant (PDA), Gaming device, Cell phones, and so on. Portable Devices can do so many different things. They are in all forms of shape and sizes. People from all ages can use them.
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