C
Cable Modem : Digital modem that sends and receive digital data over the cable.
Cache : Area of memory that stores the contents of frequently used data or instruction.
Candela : Standard unit of luminous intensity
Capacity : Number of bytes a storage medium can hold.
Card Reader/Writer : Devices that reads and write data, instructions and information stored on flash memory cards
Carpal Tunnel Syndrome : Wrist or hand injury caused by using a keyboard for long periods of time.
CD/DVD Burner : Utility program that write text, graphics, audio, and video files to a recordable or rewritable CD/DVD
Compact Disc-recordable/CD-R : Optical Disk on which user can write ,but not erase, their own items,data, information,graphics or audio.
CD Recorder/CD-R drive : Device that can read both audio CDs and standard CD- ROM
Compact disc read only memory/CD- ROM : Type of optical disc that uses laser technology to store data, instruction and information that user can read but not write on or erase.
CD-RW: Erasable multi-session optical disc on which users can write data, instruction and information multiple times.
Celeron : Inter processor used by less expensive basic PCs.
Cell : Intersection of a column and row in worksheet.
Central processing Unit(CPU) : Electronic component on a computer 's mother board that interprets and carries out the basic instructions that operate the computer.
Centrino/Centrino Pro : Mobile Technology that integrates wirless capabilities in notebook computers and Tablet PCs.
Character : A single letter, figure, punctuation mark, or symbol produced by a keystroke on a computer.
Character set : Compelete set of characters, alphabetic, numeric, and symbolic.
Character String. Specified sequence of typed characters, representing a word or phrase ;often used to locate a particular word or phrase wherever it appears in a document.
Charged- coupled Devices (CCD) : Digital camera chip that generates analog symbol that represents an image.
Charting : Spreadsheet software feature that depicts data in a graphical form.
Chassis : Case of the system unit made of metal or plastic that protects the internal electronic components from damage.
Chat : Real-time typed conversation that takes place on a computer .
Chat Client : program that allows a user to connect to a chat server to participating in a chat session.
Chat room : Locations on an Internet server that permits user to chat with each other.
Check box : Small box that appears on screen alongside each option displayed in a dialog box. When an option is selected, an X or a check mark appears inside the box.
Chip :[/B] Small piece of semiconducting metrial , usually silicon , on which integrated circuits are etched.
Click : The act of moving mouse pointer to a button and then pressing and releasing a button the mouse.
Click Wheel : Touch sensitive scroll pad on portable media player that users rotate to browse through song, picture, or movie lists and press to play or pause media, display a menu and other actions.
Client Operation System/ Stand alone operating System: Complete operating system that works on desktop computer , notebook computer or mobile computing devices and also works in conjunction with a network operating system.
Clip Art : Collection of Drawing , photos, and other images that can insert in documents.
Clipboard : Temporary storage location for document content that is used in cutting and pasting or copying operations.
Client/server computing. A network of computers that consist of a file server and individual clients.
Clock Cycle : One tick of system clock.
Clock speed : pace of the system clock ,measured by the number of ticks per second.
Cold Boot : process of turning on a computer that has been powered off completely.
Color Library : Standard set of colors used by designers and printers to ensure that colors will print exactly as specified.
Compatibility : Ability of one type of computer to share information or to communicate with another type of computer.
COM ports/Communication ports : Serial ports on the system unit.
Compiler : Program that translates from a higher level language to assembly language.
Command :Instruction that causes a program to perform a specific action.
Command Line Interface(CLI) : Type of user interface in which a user types command or presses special keys on the keyboard ;such as function keys to enter data and instructions.
Communication Devices : Hardware components that enables a computer to send and receive data,instruction and information to and from one or more computers.
Compact Flash : Type of miniature mobile storage medium that is a flash memory card capable of storing between 64 MB ad 16 GB data.
Complementary metal oxide semiconductor (CMOS) : Technology used by some chips that provides high speeds and consumes little power by using battery power to retain information even when power to a computer is off.
Compress : To shrink the size of a file .
Computer : Electronic device ,operating under the control of instructions stored in its own memory , that can accept data, process the data according to specified rules, produce results and store the information and results for future use.
Computer Aided Design(CAD)Software : Sophisticated type of application software that assist a professional user in creating engineering ,architectural and scientific design.
Computer Aided Manufacturing(CAM) : Use of computer to assist with manufacturing processes such as fabrication and assembly.
Computer-Aided Software Engineering(CASE) :Use of computers to help with the process of designing software.
Computer Based Training (CBT) : Type of education in which students learn by using and completing exercise with instructional software, also called computer -aided instructions(CAI).
Computer literacy : Having a current knowledge and understanding of computers and their uses.
Computer output microfilm recorder : Devices that record the images on microfilm and microfiche.
Computer Trespass : The crime of using a computer without the owner’s permission
Connector : Device that joins a cable to a port.
Consumer-to-consumer (C2C) e-commerce : E-commerce that occurs when one consumer sells directly to another ,such as in an online auction.
Content aggregation : Business that gathers and organized Web content and then distributes,the content to subscribers for free or a fee.
Continuous-form papers : Type of paper, used by dot-matrix printer, which consists of thousands of pages connected together end to end.
Continuous Speech : Flowing conversation tone recognized by most of today's voice recognition softwares.
Contrast Ratio : Difference in light intensity between the brightest white and darkest black that can displaced on LCD.
Convergence : Trend of offering similar functions that makes it increasing difficult to differentiate between two similar devices.
Cookie : A small text file to identify and collect information about every user who visits the site .It stores users information on a user’s hard drive when the user visits certain Web sites in order to gain access.
Copy : To reproduce information elsewhere such that the original information remains in place.
Cordless Keyboard : keyboard that transmit data using wireless technology ,such as radio waves or infrared light waves.
Core : Family of Intel processors used in most high-performance PCs.
Cracker : Computer criminal who penetrates a computer program to steal information or damage the program in some way.
Crash : A malfunction in hardware or software that keeps a computer from functioning.
Crawler : Program that automatically explores the WORLD WIDE WEB and collects information; also called a spider.
Create : To enter text or numbers, insert images and perform other tasks with a document using an input devices such as mouse, keyboard or digital pens etc.
Creeping Featurism : Practice of trying to improve software by adding features in an unsystematic way, ultimately making it less reliable and harder to use.
Crippleware/Freewares: Software that is distributed free as an incomplete or time-limited version in the hope that the user will purchase the fully functional version.
Crossfire : Technology allowing the use of multiple graphics cards to enhance the computer’s ability to display graphics, developed by ATI.
Cross platform : Program that runs the same on multiple operating system.
CRT monitor : Type of desktop monitor that contains cathode ray tube.
Crunch Mode : Work situation in which a deadline is near and everyone is working hard, keeping extended hours; usually the result of a mistaken estimate made by management.
Cryptography: The technology of encoding information so that it cannot be read by an unauthorized person.
Cuil :A search engine that was created to be a rival to Google. It delivers search results in tabs and menus that help the user to narrow the search.
Cursor : Symbol on a computer screen , usually a blinking vertical bar, that indicates where the next character a user will display.
Custom Softwares : Software that perform specific functions developed at a user's request.
Customer Relationship Management(CRM) : Software for keeping track of past customers, sales prospects, and the like.
Cybernetics : Study of the processing of information by machinery, especially computers and control systems.
Cyberpunk : An antisocial person who uses computers as a means of self expression, often performing destructive acts.
Cyberspace :Referred to as virtual reality;that exists in networked computer systems rather than in any particular physical location,used to refer to the world of the Internet as a whole.
Cybrarian : A person who makes a career of online research and data retrieval ;equivalent of a librarian.
Cyburbia (cyber suburbia) : Community of computer users that exists in cyberspace.
Cylinders : The vertical section of a hard disk track that passes through all platters.