Introduction+to+Information+System

WHAT IS A COMPUTER?

A computer is an electronic device that manipulates information, or "data." It has the ability to store, retrieve, and process data. You can use a computer to type documents, send email, and browse the internet. You can also use it to handle spreadsheets, accounting, database management, pres entations, games, and more.

COMPUTER:

The four stage model of a computer system is screen, keyboard, mouse and CPU or output, input, processing and storage.

Data versus Information:

Data - Meaning: Data is raw, unorganized facts that need to be processed. Data can be something simple and seemingly random and useless until it is organized.

Information - Meaning: When data is processed, organized, structured or presented in a given context so as to make it useful, it is called Information.