Computer hardware refers to the physical parts of the computer itself that are linked together to form a single unit of working machine. But before these parts can only be made to run accordingly, a software system has first to be installed within the computer known as the operating system. With reference to a desktop or personal computer, it typically consists of several components such as the CPU or central processing unit, motherboard, hard drives, video cards, sound cards, and a memory. Other peripheral devices include keyboards, mouse, monitor, scanner, modem, printer, web camera, and many more.

A recent addition to is the Universal Serial Bus or popularly known as the USB. The USB can left in charge for the installation of various drivers whenever a new device has been plugged and detected. Because of this, it do away with the process of rebooting the computer every time a new device has to be installed. The USB port can allow the installation of 127 new devices in a single unit of computer. Another part of the computer is the video adapter which is significantly important to have for an outstanding quality of displays on the monitor while playing games on the PC.

The Accelerated Graphic Ports or AGP interface permits graphics of high performance chiefly at 3D levels which supports the data transfer of 64-bit and with a several hundreds of MHz clock speed. Benchmarking is typically done to measure the performance of the computer hardware’s systems. Those that involve the application programs are the usual and common targets of benchmark tests.

A firewall hardware is an amalgamation of servers and routers and is usually used together with a combination of various software to avert unauthorized access to sensitive information stored in a networked environment or on a computer. The firewall is extremely important since hackers are quite common these days in the world of cyberspace. These hackers can easily gain access to various confidential matters and other important data without a firewall. The firewall together with a particular software can work by controlling and regulating networking traffics through the application of certain rules. They then record all data and communication transfer between the external and internal networks. Some of the useful methods used by firewalls are proxy services, stateful inspection, and packet filtering which works well in controlling traffics across the network.