Computer Facts

•  The earlier computers, which were massive in size,were based on vacuum tubes.
• Computer is a fast and accurate electronic symbol processing machine that can accept, store and
• process data and can produce useful information as output.
• The computer system is divided into two parts, hardware and software. I. Hardware is the electrical and electronic components of a computer that can be seen and touched. 2. Software is the collection of  programes written for computer to perform certain tasks.
• A computer program refers to the range of programs that are used to perform various functions.
• The three important parts of a computer are Input device, Central Processing Unit (CPU) and Output device.
• Main chip of the computer is called CPU
• The CPU is the brain of the computer.
• Parts of CPU are ALU, CU, MU
• Control Unit (CU) controls the processing of data inside computer.
• Memory Unit stores data temporarily during the processing.
• Arithmetic and Logic Unit (ALU) performs all the mathematical calculations.
• WINDOWS is a Software.
• Windows is an operating system that helps the user to work on the computer.
• The My Computer folder on the Desktop shows the program icons present in your computer such as hard disk, floppy disk, CD-Rom, Pendrive and Printer.
•  The My Documents Folder is a desktop folder that stores all the documents, graphics and other files.
• The Recycle Bin is a folder in which deleted files are stores.
• MS DOS, Linux, Unix, MS Windows etc are the most popular Operating System.
• My Computer, My Documents, Recycle Bin and Network Neighbourhood are the common icons found on the Windows Desktop.
• The free programs that we get from start menu is called Accessories
• Mouse is a device for moving the cursor on the screen of a computer.
• The part of a computer that contains the screen where messages to and from the Central Processing Unit are displayed - Monitor.
• Scanner is a device that converts images into digital form so that they can be stored and manipulated on computer.
• Early computing machines, like the ENIAC, were actually meant to assist the armed forces.