Computer Awareness

                Computer Hardware  Computer hardware refers to the physical components of a computer that can be seen and touched by the user .By the use of these hardware devices, it made very easy for the computer for processing its data, store and retrieve. Hardware  is one of the basic necessary part of a computer system.   Computer hardware also includes communication bus, input devices, output devices, etc. Input Devices An input  device  can defined as an electromechanical device that allows the user to feed data into the computer for analysis and storage and to give commands to the computer.the data is entered into the main memory thought the input devices. They accept instructions from the user and convert the accepted instructions into the machine language. Some of the commonly used input devices are described below Keyboard It is one of the most common input devices. The user can ty...

Computer architecture deals with the functional behaviour of a computer system as viewed by a programmer. It can also be described as the logical structure of the system unit that house electronic components. The computer architecture forms the backbone for building successful computer system. Pc from Google Components of computer A computer consists of following main components: 1. Input/output (I/O) unit 2. Central processing unit 3. Memory Unit Input Unit The computer accepts coded information through input unit by the user. It is a device that is used to give required information to the computer e.g. keyboard, mouse, etc. An input unit performs the following functions (a) It accepts the instructions and data from the user. (b) It converts these instructions and data in computer in acceptable format. (c) It supplies the converted instructions and data to the computer system for further processing. Output Unit This units sends the pro...

Computer is  an electronic machine that accepts data from the user, processes  the data by performing calculations and operations on it and generates the desired output as a result. The term computer is derived from the Latin word "computare" which means 'to compute'. Generally, computer is the combination of Hardware and software which converts data into information. Computer operates on set of instructions only, they cannot think as human being. Computer has an ability to store and execute set of instructions called program which makes it extremely distinguishable and versatile than calculators. Computer makes people's lives easier and more comfortable.                                     Functioning of a computer Computer performs four basic functions which are as follows 1. Input - Information  or data that is entered into a computer is called input. It sends data...