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Network Administration
Computer hardware and software
Computer software refers to a collection of procedures, computer programs and codes that perform different functions on a computer system. Software systems are often classified into system software, programming software, and application software. Any physical device used in or with a computer is referred to as computer hardware. A computer display monitor, a CD-ROM and a printer are all examples of hardware.
Functions of computer hardware
The following are the functions of different computer hardware:
Internal system unit components
A processer, also known as the central processing unit (CPU), enables the operating system and operating software run on a system, by executing a set of instructions (Clements, 2006). A motherboard holds the processor and links internal components, such as the random access memory (RAM), together using communication buses. Basic input/output system (BIOS) is responsible for linking computer software and hardware (Clements, 2006). It ensures hardware components perform their functions and turns off processes in the correct way. A power supply unit (PSU) is used to power the components in a computer system while the universal serial bus (USB) and serial enable it to communicate with external devices.
Internal memory components
Internal memory components include the RAM, ROM and cache. Data is written and...
Cache memory is RAM that can be accessed quicker than RAM and carries out instructions more swiftly.
Peripherals
Output devices, such as monitors and printers, portray signals to the end user from the operating system (Clements, 2006). Coaxial and fiber optic cables are used to connect the computer to various networks. Backing storage devices are also peripherals used to back up the information stored in a computer to prevent loss of valuable information.
Functions of computer software
Application software
This type of software is used to perform functions beyond the performance of the computer by itself. It may be a single program or a collection of programs that work together to accomplish different tasks (Berger, 2005). Image viewers provide entertainment to the user, and others such as Microsoft office may be applied in business or learning environments.
System software
System software provides a platform for running software and operates the computer hardware by integrating, controlling and managing different components (Berger, 2005). Operating systems provide services to other software and device drivers control the devices attached to computers.
Power supply and form factors
Power supply
The power supply unit…
References
Berger, S.A. (2005). Hardware and Computer Organization: The Software Perspective, Volume 1. Burlington: Elsevier, Inc.
Brown, M. (2011). Power Supply Cookbook. Woburn: Butterworth-Heinemann
Clements, A. (2006). Principles of Computer Hardware (4th Ed.). New York, NY: Oxford University Press, Inc.
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