Computer History

The First Computer: ABACUS(500 BC) The abacus was created at around 500BC. It is said to be the first computer in history. The abacus was actually created in Greece. Abacus is still used in our everyday life. Jacquard’s Mechanised Loom (1801) Around 1801, French man Joseph Jacquard created a kinetic loom through which strings needed […]

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Computer: Database Basics

What is a Database? Database is any collection of data, or information, that is specially organized for rapid search and retrieval by a computer. Databases are structured to facilitate the storage, retrieval, modification, and deletion of data in conjunction with various data-processing operations. What is DBMS? A database management system (DBMS) extracts information from the […]

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Computer: Networking and Communication

What is Networking and Communication? Data communications refers to the transmission of this digital data between two or more computers and a computer network or data network is a telecommunications network that allows computers to exchange data. The physical connection between networked computing devices is established using either cable media or wireless media. The best-known […]

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Computer: Digital Citizenship

A digital citizen is a person utilizing information technology (IT) in order to engage in society, politics, and government. As defined by Karen Mossberger, author of the novel on “Digital Citizenship: The Internet, Society, and Participation,” digital citizens represent “those who use the Internet regularly and effectively.” Principles of Digital Citizenship: Respect: the elements of […]

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Computer: Social networking

Social networking services emerged as a significant online phenomenon in the 2000s. These services used software to facilitate online communities, where members with shared interests swapped files, photographs, videos, and music, sent messages and chatted, set up blogs and discussion groups, and shared opinions. Available Social networking Services: Service Description Facebook Allows to share text, […]

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Basics of Hacking, Security Tools and Viruses.

What is Hacking? Hacking is an attempt to exploit a computer system or a private network inside a computer. Simply put, it is the unauthorised access to or control over computer network security systems for some illicit purpose. What is an Ethical Hacking? An Ethical Hacker exposes vulnerabilities in software to help business owners fix […]

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Computer: File Extensions

A file extension is a suffix at the end of a filename that specifies what type of file it is. For Example: If file name is photo.png, “png” is file extension, Text Files .DOC.DOTX Microsoft Word Document Microsoft Word Document Template .DOCX Microsoft Word Open XML Document .LOG Log File .MSG Outlook Mail Message .ODT […]

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Microsoft Office: Word, Excel & PowerPoint

Microsoft Office is a proprietary commercial office suite of inter-related desktop applications, servers and services for the Microsoft Windows operating systems, introduced by Microsoft in 1989. Initially a marketing term for a bundled set of applications, the first version of Office contained: Microsoft Word Microsoft Excel Microsoft PowerPoint Microsoft Excel Microsoft Excel is a spreadsheet […]

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Computer: Number Systems

The language we use to communicate with each other is comprised of words and characters. We understand numbers, characters and words. But this type of data is not suitable for computers. Computers only understand the numbers. Computers represent data in sets of binary digits. The representation is composed of bits, which in turn are grouped […]

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Computer Fundamentals

A Computer is a general purpose device that can be programmed to carry out a set of arithmetic or logical operations automatically. A computer system is made up of hardware and software components and is capable of: data input – using input devices data processing – using a microprocessor, typically the Central Processing Unit (CPU) […]

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