The abacus is the first known calculating device. This illustrates how the ancient computers worked. It was invented by the Chinese and is still widely used in the far east for commercial calculations….

Computer has become an essential part of our day-to-day activities. Computers are used more or less in every sphere of life. Its growing importance is because if its unique features such as Accuracy,…

In recent years, the computer industry has grown at a phenomenal pace. In a short time of 35 years or so computers have improved tremendously. In the last decade the speed of the…

Computer is an electronic device for performing arithmetic and logical operations. Actually speaking electronic data processing does not go far back into the history. It is in existence merely from early 1940’s. The…

It is a branch of technology known as information security as applied to computers. The objective of computer security varies and can include protection of information from theft or corruption, or the preservation…

A DBMS is a software package for defining and managing a database. A real database includes various definitions such as fields names, data formats, record structures, file structures, rules for validating and manipulating…

A database management system (DBMS) is the software that allows a computer to perform database functions of storing, retrieving, adding, deleting and modifying data. Relational database management systems (RDBMS) implement the relational model…

In the beginning, only government “think tanks” and a few universities were linked. Basically the internet was an emergency military communications system operated by the Department of Defense Advanced Research Project Agency. The…

The internet is a network of computers spanning the globe. This communication structure is a system connecting more than fifty million people in countries around the world. A global web of computers, the…

Specific tasks of the computer are performed by the application software which includes applications such as Word Processor, MS Paint, Calculator and Games. Thousands of other programs are also available on the Internet….

Software is a general term for the various kinds of programs used to operate computers and related devices. Software can be thought of as the variable part of a computer and hardware the…

Specific tasks of the computer are performed by the application software. It includes applications such as Word Processor, MS Paint, Calculator and Games. Thousands of other programs are also available on the Internet….

The instructions that tell hardware what to do are called software. The two major categories of software are Operating System Software and Application Software. As computer entered the third generation, in addition to…

The CPU processes the data it receives as input. The CPU receives the data in the form of binary bits, which it can understand. The CPU performs many functions like: The CPU can…