Software and application of PC software packages: Software definition, Type of software and its Knowledge of Word processing, Spreadsheets and Power point presentation software packages Software is a set of programs, which is designed to perform a well-defined function. A program is a sequence of instructions written to solve a particular problem. There are two … Read more


Network Basic element of Communication systems, data transmission mode, transmission media, network topologies, network types, communication protocols, network security mechanism.     Elements of a Communication System Elements of a communication system The above figure depicts the elements of a communication system. There are three essential parts of any communication system, the transmitter, transmission channel, … Read more


Definition of Internet, search tools, web browsers, e-mail and search engines. IT applications: E-cards, E- shopping, E-commerce.   INTERNET   The Internet is a global network of billions of computers and other electronic devices. With the Internet, it’s possible to access almost any information, communicate with anyone else in the world, and do much more. It’s important … Read more

Computer Database

Computer Database Computer Database management systems, Data processing, business data processing, data storage  `and file management system     Computer Database management System and Data, Data Processing   Computer Database processing and data management are critical components of business organizations. DATA PROCESSING Data processing refers to the process of performing specific operations on a set of data or a database. … Read more

Computer elements

Computer elements Definition of digital computer, Elements of computer: Input unit, Output unit, Primary memory, Secondary memory and Processing unit. Computer is an electronic device that is designed to work with Information. term computer is derived from the Latin term‘computare’, this means to calculateor programmable machine. Computer cannot do anything without a Program. It represents the decimal numbers through a string of … Read more

computer-Classifications, generations, applications and limitations

Computer Classifications, generations, applications and limitations of digital computers   Computer Classification: By Size and Power Computers differ based on their data processing abilities. They are classified according to purpose, data handling and functionality. According to functionality, computers are classified as: Analog Computer: A computer that represents numbers by some continuously variable physical quantity, whose variations mimic the properties of … Read more