TECHNOLOGY REVOLTIONJ.R.C. LTD

FUNCTIONS OF THE COMPUTER

WHAT IS A COMPUTER?

A programmable machine that performs high-speed processing of numbers, as well as of text, graphics, symbols, and sound.

All computers contain a central processing unit that interprets and executes instructions; input devices, such as a keyboard and a mouse, through which data and commands enter the computer; memory that enables the computer to store programs and data; and output devices, such as printers and display screens, that show the results after the computer has processed data.

DIFFERENT TYPES OF COMPUTERS

CLASSES BY SIZE:

Microcomputers (Personal Computers)Eg. Desktops and Laptops

Minicomputers (Midrange Computers)Eg. Laboratory Computers

Mainframe Computers

Super Computers

GENERAL FUNCTIONS OF A COMPUTERThese can be classified into four basic operations referred to as The Information Processing Cycle.1. Input2. Processing3. Output4. Storage

FUNCTIONS: RECEIVE INPUT Input devices, such as keyboards , scanners or

mouse, accept data. Data is provided as a set of instructions.

FUNCTIONS: PROCESSING The Central Processing Unit (CPU) interprets

and executes program instructions to process information, perform arithmetic calculations and make logic based decisions.

It manipulates the data and converts it into information.

FUNCTIONS: OUTPUT After processing the data the computer

displays the result, it gives an output. Output devices are the monitors, printers and speakers.

Output devices send information from the computer to the outside world.

FUNCTIONS: STORAGE Memory (RAM) holds data temporarily for use

by the central processing unit (CPU) and secondary storage devices, such as hard drive, CD, DVD and USB flash drive and stores data for long term retrieval.

SUMMARY OF COMPUTER FUNCTIONS

FUNCTIONS OF COMPUTERS INMEDICINE

Computers are the excellent means for storage of patient-related data.

Computer software is used for diagnosis of diseases. It can be used for the examination of internal organs of the body.

The different types of monitoring equipment in hospitals are often based on computer programming.

In the field of medicine, computers allow faster communication between a patient and a doctor.

MEDICINEFUNCTIONS OF COMPUTER SYSTEMS.

FUNCTIONS OF COMPUTERS IN EDUCATION SYSTEMS.

Teachers at all levels use computers to administer assignments, keep track of grades or offer online instructions.

In addition to books, video and other materials, self-directed learners often use computers to continue their education outside their faculties.

Popular networking sites like MySpace and Facebook can also be used for educational purposes, as some instructors integrate aspects of those sites into their lessons.

With all the creative software at hand, it has become easy for students to prepare their assignments and projects.

EDUCATIONFUNCTIONS OF COMPUTER SYSTEMS.

FUNCTION OF COMPUTERS IN TRANSPORTATION SYSTEMS

One common computer used in transportation is the Global Positioning System (GPS). It features a screen that shows a map that tracks your vehicle's movement via satellite signals. 

Positive Train Control is the computer system that tracks the movement of trains on various railways around the country.

Route navigation systems that monitor and control movements to provide increased safety.

Traveling by land by bus or train typically begins with online booking on the computer.

TRANSPORTATION FUNCTIONS OF COMPUTER SYSTEMS

FUNCTIONS OF COMPUTERS IN COMMUNICATION

Social networking sites including Facebook, Twitter and LinkedIn allow users to rapidly generate content for people in their network to view.

Voice-Over-Internet Protocol (VOIP) replaced the need for landline telephones; these lines provide instant phone or video communication over the Internet, and often are cheaper than fixed phone lines.

While it not a personal computer, routers are types of computers used to direct communication traffic.

COMMUNICATION FUNCTIONS OF COMPUTERS SYSTEMS

SUMMARY A computer is a programmable machine that

performs high-speed processing of numbers, as well as of text, graphics, symbols, and sound.

The functions of computers can be classified into four basic operations referred to as The Information Processing Cycle.

1. Input2. Processing3. Output4. Storage

SUMMARY CONT.… Computers also function in fields of:• Medicine• Transportation• Education• Communication

Computer technology is in constant advancement with the development of new functions and features!

*THE END*