Desktop Computer Systems Mobile Computer Systems Servers
Welcome to BSPEC - Computer Systems
A computer system is a set of integrated devices that input, output, process, and store data and information.
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In its most basic form, a computer system is a programmable electronic device that can accept input; store data; and retrieve, process and output information.
What is a Computer System?
A computer is a device that is capable of receiving information (input), performing operations with that information (processing), and producing a result (output)
A computer system is a computer that comes with software, hardware, and other peripherals that allow it to perform a certain task
There are many types of computer systems, the most common being desktops, and mobile devices including laptops, and servers
Desktop Computer Systems
A desktop computer system is a personal computer system designed for use in a set location
This is primarily due to its size and power requirements
Unlike a mobile computing device such as a tablet, phone, or laptop, a desktop computer relies on a non-removable power supply plugged into the wall
A desktop computer generally includes the system case with the computer's components, as well as common peripherals such as a keyboard, mouse, and monitor
Mobile Computer Systems (Mobile phones, Tablets and Laptops)
A mobile computer system is a computer system that is not constrained to one location
Its size and use of a portable battery allow for the computer system to be moved freely
Mobile computer systems often rely on alternate forms of input as they generally don't rely on external peripheral devices
Modern-day mobile phones, tablets, and even some laptops rely on touchscreen capabilities to accept input
This eliminates the need for a mouse and keyboard as a virtual keyboard is used instead
Laptop computer systems come with built-in mouse devices, known as a trackpad or touchpad, as well as a built-in keyboard
Servers
A server is a computer system specifically designed to run services
They work by accepting requests from the client (a user) and returning a response (such as a web page)
The benefit of running a service on a dedicated computer such as a server is security
Many types of servers exist, such as:
Mail servers = these store and move mail across the Internet
Web servers = These servers are responsible for loading web pages and other resources from a disk and serving it to the client (a user's web browser) over HTTP (hypertext transfer protocol)
FTP servers = allow for moving files securely between computers