1. Now you can do it all-print, all-print, fax, copy and scan -- from this compact, versatile all-in-one solution from an all-in-one peripheral. 2. These are the main keys (or the alphanumeric keys). Almost all of these keys are also found on a typewriter or any other device used to create printed text. 3. Short for Alternate key, the Alt key is like a second Control key. Not all computer keyboards have an Alt key, but it is standard on all PCs. You use it in the same fashion as the Control key -- holding it down while you press another key. For example, an instruction to use the Alt+P combination means that you should hold the Alt key down while pressing and then releasing the P key. The meaning of any Alt key combination depends on which application is running. 4. A screen that is attached to the front of a computer monitor to reduce glare, thus easing strain on the user's eyes 5. Archie was the first search engine ever invented, designed to index FTP archives, allowing people to find specific files. 6. A discussion group on the Internet about a particular topic; it starts by someone posting an initial query or comment. As others reply, the text forms a chain of related postings called a "message thread." Newsgroups preceded the Web by many years and are still widely used. 7. ASCII (American Standard Code for Information Interchange) is a character encoding based on the English alphabet. ASCII codes represent text in computers, communications equipment, and other devices that work with text. Most modern character encodings—which support many more characters—have a historical basis in ASCII. 8. A sound card is a computer expansion card that can input and output sound under control of computer programs. Typical uses of sound cards include providing the audio component for multimedia applications such as music composition, editing video or audio, presentation/education, and entertainment (games). 9. Streaming video is a sequence of "moving images" that are sent in compressed form over the Internet and displayed by the viewer as they arrive. Streaming media is streaming video with sound. 10. A backbone network is the top level of a hierarchical computer network. It connects to nodes at lower levels in the hierarchy. 11. A barcode reader (or barcode scanner) is a computer peripheral for reading barcodes printed on various surfaces. 12. The binary numeral system (base 2 numerals) represents numeric values using two symbols, typically 0 and 1. More specifically, binary is a positional notation with a radix of two. Owing to its relatively straightforward implementation in electronic circuitry, the binary system is used internally by virtually all modern computers. 13. A byte is commonly used as a unit of storage measurement in computers, regardless of the type of data being stored. It is also one of the basic integral data types in many programming languages. 14. A directory which is used to store user’s favorite links of website 15. Instant messaging or IM is a form of real-time communication between two or more people based on typed text. The text is conveyed via computers connected over a network such as the Internet. 16. A Buddy List is a window that shows all your buddies (friends, family, coworkers, and others) who are signed on to AOL, CompuServe (CS2000), or AIM. Whenever they sign on, their screen names appear in your Buddy List, and you can communicate with them instantly. 17. A keyboard buffer is a section of computer memory used to hold keystrokes before they are processed. Keyboard buffers have long been used in command-line processing. As a user enters a command, he sees it echoed on his terminal and can edit it before it is processed by the computer. 18. Electrical pathway, or bus, used to carry data between the components of the computer. 19. Cache is a block of memory for temporary storage of data likely to be used again. The CPU and hard drive frequently use a cache, as do web browsers. A simple definition of Cache would be: A temporary storage area where frequently accessed data can be stored for rapid access. 20. Flash memory is a form of non-volatile computer memory that can be electrically erased and reprogrammed. 21. The most common meaning of LCD is liquid crystal display, a type of flat-panel display device (i.e. a computer screen). 22. Dots per inch (DPI) is a measure of printing resolution, in particular the number of individual dots of ink a printer or toner can produce within a linear one-inch space. 23. Also called clock rate is the fundamental rate in cycles per second (measured in hertz) at which a computer performs its most basic operations such as adding two numbers or transferring a value from one processor register to another. 24. In computing, "word" is a term for the natural unit of data used by a particular computer design. A word is simply a fixed-sized group of bits that are handled together by the machine. The number of bits in a word (the word size or word length) is an important characteristic of computer architecture. 25. CMYK is a subtractive color model used in color printing. This color model is based on mixing pigments of the following colors in order to make other colors: C=cyan M=magenta Y=yellow K=key (black). 26. Mainframes (often colloquially referred to as Big Iron) are computers used mainly by large organizations for critical applications, typically bulk data processing such as census, industry/consumer statistics, ERP, and financial transaction processing. 27. Personal digital assistant, an electronic device which can include some of the functionality of a computer, a cell phone, a music player and a camera 28. A supercomputer is a computer that leads the world in terms of processing capacity, particularly speed of calculation, at the time of its introduction. 29. Spamming is the abuse of electronic messaging systems to send unsolicited, undesired bulk messages. While the most widely recognized form of spam is e-mail spam, the term is applied to similar abuses in other media: instant messaging spam, Usenet newsgroup spam, Web search engine spam, spam in blogs, and mobile phone messaging spam. 30. A control unit is the part of a CPU or other device that directs its operation. The outputs of the unit control the activity of the rest of the device. A control unit can be thought of as a finite state machine. 31. IBM to launch S/390 G6 mainframe server capable of 1.6 billion instructions per second 32. Static random access memory (SRAM) is a type of semiconductor memory. The word "static" indicates that the memory retains its contents as long as power remains applied, unlike dynamic RAM (DRAM) that needs to be periodically refreshed. 33. The Accelerated Graphics Port (also called Advanced Graphics Port) is a high-speed point-to-point channel for attaching a graphics card to a computer's motherboard, primarily to assist in the acceleration of 3D computer graphics. Some motherboards have been built with multiple independent AGP slots. AGP is slowly being phased out in favor of PCI Express. 34. Universal Serial Bus (USB) is a serial bus standard to interface devices. 35. A dot matrix printer or impact matrix printer refers to a type of computer printer with a print head that runs back and forth on the page and prints by impact, striking an ink-soaked cloth ribbon against the paper, much like a typewriter. 36. The Internet is the worldwide, publicly accessible network of interconnected computer networks that transmit data by packet switching using the standard Internet Protocol (IP). It is a "network of networks" that consists of millions of smaller domestic, academic, business, and government networks, which together carry various information and services, such as electronic mail, online chat, file transfer, and the interlinked Web pages and other documents of the World Wide Web. 37. In computing, a scanner is a device that analyzes an image (such as a photograph, printed text, or handwriting) or an object (such as an ornament) and converts it to a digital image. Most scanners today are variations of the flatbed (or desktop) scanner The flatbed scanner is the most common in offices. 38. A microprocessor (sometimes abbreviated as µP) is a digital electronic component with transistors on a single semi conducting integrated circuit (IC). One or more microprocessors typically serve as a central processing unit (CPU) in a computer system or handheld device. 39. The refresh rate (or "vertical refresh rate", "vertical scan rate" for CRTs) is the number of times in a second that a display is illuminated 40. Inkjet printers are a type of computer printer that operates by propelling tiny droplets of liquid ink onto paper. They are the most common type of computer printer for the general consumer due to their low cost, high quality of output, capability of printing in vivid color, and ease of use. 41. Intellectual Property Rights (IPR), very broadly, are rights granted to creators and owners of works that are results of human intellectual creativity. These works can be in the industrial, scientific, literary and artistic domain. It can be in the form of an invention, a manuscript, a suite of software, or a business name. 42. Ergonomics (or human factors) is the scientific discipline concerned with the understanding of interactions among humans and other elements of a system, and the profession that applies theory, principles, data, and methods to design in order to optimize human well-being and overall system performance (definition adopted by the International Ergonomics Association in 2000). 43. Search for any referenced terms. Enter search terms (or partial terms) separated by a space and you will be presented with all matching files instantly. 44. The arithmetic logic unit (ALU) is a digital circuit that calculates an arithmetic operation (like an addition, subtraction, etc.) and logic operations (like an Exclusive Or) between two numbers. 45. A shortcut key (or accelerator key, keyboard shortcut, hot key, key binding, key combo, etc.) is a key or set of keys that performs a predefined function. These functions can often be done via some other, more indirect mechanism, such as using a menu, typing a longer command, and/or using a pointing device. By reducing such sequences to a few keystrokes, this can often save the user time, hence "shortcut". 46. In computer graphical user interfaces, drag-and-drop is the action of (or support for the action of) clicking on a virtual object and dragging it to a different location or onto another virtual object. In general, it can be used to invoke many kinds of actions, or create various types of associations between two abstract objects. 47. An optical mouse uses a light-emitting diode and photodiodes to detect movement relative to the underlying surface, rather than moving some of its parts — as in a mechanical mouse. 48. A trackball is a pointing device consisting of a ball housed in a socket containing sensors to detect rotation of the ball about two axes—like an upside-down mouse with an exposed protruding ball. 49. Non-volatile memory, or non-volatile storage, is computer memory that can retain the stored information even when not powered. 50. An Internet service provider (abbr. ISP, also called Internet access provider or IAP) is a business or organization that sells to consumers’ access to the Internet and related services.