Functions of a Personal Computer(PC)
Computer is an integral part of everyday life. We use Personal Computer (PC) to perform
Various tasks include data storage and processing are the important tasks performed by the PC.
Takes data from user, processes it, and gives the output in a prescribed format. The use of a Personal Computer (PC) makes mathematical calculations easier. Scientists use the Personal Computer (PC) for scientific applications such, as weather forecasts, research, and chemical analysis.
Personal Computer (PC) provides faster means of communication through the Internet by sending and receiving e-mails. We can use the Internet to gain information on any topic. We can use the PC for entertainment, such as for watching movies using DVDs, listening to music using CDs and MP3s. We can also download software, graphics, music, and movies from the Internet using the Personal Computer (PC). It would be hard to imagine today's world without the PC. A machine that performs such a varied range of functions is hard to define in a few words. A computer is an electronic device that accepts, stores, and processes the data and returns the result or output.
Functions of a PC
Personal computer has a microprocessor for processing data, a keyboard for entering data, a monitor for displaying data, and a storage device for storing data. PC performs many functions such as:
Accepting Data - Accepts data input from the user through various input devices like the keyboard, mouse, scanner, digital camera or microphone.
Storing Data - Enables you to store large amounts of data. This also helps in recovering the data stored earlier. It can store the data permanently on the storage devices such as the hard disk drive, floppy disk drive, physical memory, optical drives or tape drives.
Processing Data - Performs operations on the input data. A set of instructions starts these operations. These instructions are either stored in the memory or built into the microprocessor. Data processing is the process of manipulating the data using a set of instructions and producing the desired output. For example, when we write a program and give some input, PC processes the input according to the program and returns the output. In this case, the program is the set of instructions that the PC uses to process the data, which is the input.
Displaying Data - Shows processed data to the user. This data can be in the form of numbers, characters, or pictures. PC displays the output through various output devices, such as monitors, printers, or speakers. Any device that gives the output from a computer is called the Output device. For example, when we play a CD or DVD, what we see on the monitor or hear from the speakers is the output. The documents that we print after typing and processing are the forms of output from the PC.
The entire process of accepting the data, processing it, and displaying the processed data is called the Input-Process-Output cycle.