Please refer to Important Definitions Class 7 Computers Notes and important questions below. The Class 7 Computers Chapter wise notes have been prepared based on the latest syllabus issued for the current academic year by CBSE. Students should revise these notes and go through important Class 7 Computers examination questions given below to obtain better marks in exams
Important Definitions Class 7 Computers Notes and Questions
The below Class 7 Important Definitions notes have been designed by expert Computers teachers. These will help you a lot to understand all the important topics given in your NCERT Class 7 Computers textbook.
Refer to Chapter Important Definitions Notes below which have been designed as per the latest syllabus issued by CBSE and will be very useful for upcoming examinations to help clear your concepts and get better marks in examinations.
Access time – The amount of time it takes for requested information to be delivered from disks and memory.
Antivirus software – A program designed to look for and destroy viruses that may infect the memory of a computer or files stored on a computer.
Artificial intelligence (AI) – Computer systems that attempt to imitate human processes for analyzing and solving problems.
Accumulator – A local storage area called a Register, in which the result of an arithmetic or logic operation is formed.
BIT – It is basic unit of computers. It has two values 1 & 0 only.
BYTE – Combination of 8 Bits.
Basic Input Output System (BIOS) – Also known as ROM BIOS. It provides a abstraction layer for the hardware, i.e., a consistent way for application programs and operating system to interact with input/output devices.
Bug – A software bug is an error, flaw, failure, or fault in a computer program or system produces an incorrect or unexpected result.
Bus – A pathway along which electronic signals travel between the components of a computer system.
Cookie – A packet of information that travels between a browser and the web server.
Crash – Your computer or application no longer works correctly and so you “loose” all the work you’ve done since the last time you saved.
Command – An instruction that causes a program or computer to perform a function.
Cache – It is a memory storage area that keeps frequent use data readily available to the computer so that the computer does not retrieve them from slow storage devices.
Clock Speed – The speed of computer is measured in clock speed. High clock speed is synonymous with high processing capability. It is measured in Megahertz (MHZ).
Column – A vertical block of cells in a table or spreadsheet.
Delete – To remove an item of data from a file or to remove a file from the disk.
Debugging – Locating and eliminating defects in a program.
Desktop – The electronic work area on a display screen.
Dots Per Inch (DPI) – It is defined as the measure of the resolution of a printer and scanner, or monitor.
Domain Name – A unique name that identified a particular website and represents the name of the server where the web pages reside.
Edit – To make certain changes in existing data.
Ethernet Card – A network adapter that enables a computer to connect to an ethernet.
Fax – A shortened form of the word facsimile. A copy of a document transmitted electronically from one machine to another.
File transfer protocol (FTP) – A set of guidelines or standards that establish the format in which files can be transmitted from one computer to another.
Firewall – A security system usually consisting of hardware and software that prevents unauthorized persons from accessing certain parts of a program, database, or network.
Flash Memory – It is a type of non-volatile computer storage chip that can be electrically erased and reprogrammed. It was developed by EEPROM.
Gateway – A machine that links two networks using different protocols.
Gigabyte – A measurement of the storage capacity of a device. One gigabyte represents 1024 megabytes.
Google – search engine on the web.
Gopher – A protocol used for locating and transferring information on the internet. It is an internet search tool that allows users to access textual information.
GUI – Graphical User Interface uses icons and menus to carry out commands such as opening files, delete files, move files etc..
Graphic Interchange Format (GIF) – A simple file format for pictures and photographs, that are compressed so that they can be sent quickly.
Hard copy – Text or graphics printed on paper; also called a printout.
Hard disk – A rigid type of magnetic medium that can store large amounts of information.
Hyperlink – An image or portion of text on a web page which is linked to another webpage.
Hub – A network device that connects multiple computers on a LAN so that they can communicate with another network and the internet.
Header – Repetitive information that appears at the top (the head) of every page of a document
Hypertext transfer protocol (HTTP) – The protocol used on the World Wide Web that permits Web clients (Web browsers) to communicate with Web servers
Icons – In a graphical user interface (GUI), a small, pictorial, on screen presentation of an object, such as a document, program, folder or disk drive.
Instant messaging (IM) – A chat program that lets people communicate over the Internet in real time.
Internet protocol (IP) address – A unique set of numbers that identifies a computer over a network.
Internet service provider (ISP) – An organization that provides access to the Internet for a fee.
Intranet – A private network established by an organization for the exclusive use of its employees. Firewalls prevent outsiders from gaining access to an organization’s intranet
JPEG – Joint Photographic Experts Group. A format for storing complex graphics in compressed form.
Justification – Aligning lines of text at the left margin, the right margin, both margins, or the centre. Text aligned at both margins is considered fully justified.
Keyboard – The device used to enter information into a computer.
Kilobyte – A measurement of the storage capacity of a device. One kilobyte represents 1024 bytes.
LAN – A local area network (LAN) is a computer network that interconnects computers within a limited area such as a home, school, computer laboratory, or office building, using network media
Laptop computer – A portable computer. Also known as a notebook computer.