Computer

Computer Security It is also known as Cyber Security or IT Security, Computer security is a branch of information technology known as information security’, which is intended to protect computers. There are four primary methods to provide protection to computer such as 1. System Access Control2. Data Access Control3. System and Security Administration4. System Design … Read more

Internet   Internet stands for lnternational Network, which began in 1950’s by Vint Cerf known as the father of internet. The internet is a world wide network of networked computers those are able to exchange information with each other. The data move around the Internet is controlled by protocols. Protocol refers to the set of rules … Read more

Networking A computer network is a collection of two or more computers which are connected together to share information and resources. Types of Computer Network 1. Local Area Network (LAN) A network that connect a group of computers in a small geographical are a such as home, office, building. 2. Wide Area Network (WAN) It … Read more

Microsoft Office Microsoft Office is a proprietary commercial office suite of desktop applications, servers and services for the Microsoft Windows and Mac OS X operating systems, introduced by Microsoft on 1st August, 1989. It contains Microsoft Word, Microsoft Excel, Microsoft PowerPoint and Microsoft Access. The current versions are Office 2010 for windows, released on 15th June, … Read more

Operating System An operating system is a software, or a series of program which performs various types of functions in order to manageand organize files,” Functions of an operating system are (i) Process management (ii) Memory management (ii) File management (iv) Input/output management An OS can be classified as follows Single-user Allows only one user … Read more

Computer Hardware It refers to the physical components of a computer that can be seen and touched by the user. Computer hardware basically includes. Input Devices- An input device can be defined as an electro mechanical device that allows the user to feed data into the computer for analysis and storage to the computer. Someof … Read more

A computer consists of following main components- 1. Input/Output Units  2. Central Processing Unit 3. Memory Unit 1. Input/Output Units- The computer accepts coded information through input unit by the user, the devices used for this are keyboard, mouse etc., and then the processed result to the user is given by output devices like monitor, … Read more

Based on Size Micro Computer Micro Computer They are the least powerful, yet the most widely used and fastest growing types of computers and are also called ‘Portable computers’. Types are 1. Laptop 2. Personal computers 3. Tablet computers  4. Handheld computers 5. Personal Digital Assistant (PDA)  Mini Computer They are smaller in size, faster, … Read more

Basic Functions of Computer 1. Input Function Input is the process of entering any type of data and instructions into a computer system by using the input devices such as a Keyboard, Mouse, Scanner, Microphone, etc, in order to receive user signals to the computer. We use such input devices to input the data into the computer by typing the … Read more