Monitor

INSTRUCTIONS FOR TODAY 1. Open Internet Explorer 2. Find information about the following concepts:

(What is a…..?)

1. CPU 2. KEYBOARD 3. MOUSE 4. SCREEN 5. LOG IN 6. USERNAME 7. PASSWORD 8. MONITOR 9. DESKTOP 10. DOCUMENT 11. ICON 12. TOOLBAR 13. BUTTON 14. MENU 15. SHORTCUT

1. Central processing unit A central processing unit (CPU) or processor is an electronic circuit that can execute computer programs. This broad definition can easily be applied to many early computers that existed long before the term "CPU" ever came into widespread usage. The term itself and its initialism have been in use in the computer industry at least since the early 1960s (Weik 1961). The form, design and implementation of CPUs have changed dramatically since the earliest examples, but their fundamental operation has remained much the same. Early CPUs were custom-designed as a part of a larger, sometimes one-of-a-kind, computer. However, this costly method of designing custom CPUs for a particular application has largely given way to the development of mass-produced processors that are suited for one or many purposes. This standardization trend generally began in the era of discrete transistor mainframes and minicomputers and has rapidly accelerated with the popularization of the integrated circuit (IC). The IC has allowed increasingly complex CPUs to be designed and manufactured to tolerances on the order of nanometers. Both the miniaturization and standardization of CPUs have increased the presence of these digital devices in modern life far beyond the limited application of dedicated computing machines. Modern microprocessors appear in everything from automobiles to cell phones to children's toys.

2.Keyboard (computing) In computing, a keyboard is an input device, partially modeled after the typewriter keyboard, which uses an arrangement of buttons or keys, which act as mechanical levers or electronic switches. A keyboard typically has characters engraved or printed on the keys and each press of a key typically corresponds to a single written symbol. However, to produce some symbols requires pressing and holding several keys simultaneously or in sequence. While most keyboard keys produce letters, numbers or signs (characters), other keys or simultaneous key presses can produce actions or computer commands. In normal usage, the keyboard is used to type text and numbers into a word processor, text editor or other program. In a modern computer, the interpretation of keypresses is generally left to the software. A computer keyboard distinguishes each physical key from every other and reports all keypresses to the controlling software. Keyboards are also used for computer gaming, either with regular keyboards or by using special gaming keyboards, which can expedite frequently used keystroke combinations. A keyboard is also used to give commands to the operating system of a computer, such as Windows' Control-Alt-Delete combination, which brings up a task window or shuts down the machine.

Mouse

A contemporary computer mouse, with the most common standard features: two buttons and a scroll wheel which can also act as a third button In computing, a mouse (plural mouses, mice, or mouse devices) is a pointing device that functions by detecting two-dimensional motion relative to its supporting surface. Physically, a mouse consists of an object held under one of the user's hands, with one or more buttons. It sometimes features other elements, such as "wheels", which allow the user to perform various system-dependent operations, or extra buttons or features can add more control or dimensional input. The mouse's motion typically translates into the motion of a pointer on a display, which allows for fine control of a Graphical User Interface. The name mouse, originated at the Stanford Research Institute, derives from the resemblance of early models (which had a cord attached to the rear part of the device, suggesting the idea of a tail) to the common mouse.[1]The first marketed integrated mouse – shipped as a part of a computer and intended for personal computer navigation – came with the Xerox 8010 Star Information System in 1981. However, the mouse remained relatively obscure until the appearance of the Apple Macintosh; in 1984 a prominent PC columnist commented the release of this new computer with a mouse: “There is no evidence that people want to use these things.”[2]A mouse now comes with most computers and many other varieties can be bought separately.

Screen scraping Screen scraping is a technique in which a computer program extracts data from the display output of another program. The program doing the scraping is called a screen scraper. The key element that distinguishes screen scraping from regular parsing is that the output being scraped was intended for display to an end-user, rather than as input to another program, and is therefore usually neither documented nor structured for convenient parsing. Screen scraping often involves ignoring binary data (usually images or multimedia data) and formatting elements that obscure the essential, desired text data. Optical character recognition (OCR) software is a kind of visual scraper.

Login In computer security, login (logging or signing in) is the process by which individual access to a computer system is controlled by identification of the user using credentials provided by the user. A user can log in to a system to obtain access, and then log out when the access is no longer needed. Note that the term log in (a verb) is two words, while login (a noun or adjective referring to the procedure, credentials, or form used) is one word[citation needed]; the same applies to log out and logout.

username "Username" redirects here. For the same term in Wikipedia, see Wikipedia:Username In computing, a user is a person who uses a computer or Internet service. A user may have a user account that identifies the user by a username (also user name), screenname (also screen name), or "handle", which is derived from the identical Citizen's Band radio term. To log in to an account, a user is typically required to authenticate himself with a password or other credentials for the purposes of accounting, security, logging, and resource management. Users are also widely characterized as the class of people that use a system without complete technical expertise required to fully understand the system. In most hacker-related contexts, they are also divided into lusers and power users. Both are terms of opprobriation, but the latter connotes a "know-it-all" attitude. See also End-user (computer science). The user cannot become friends with someone without excepting it. You cannot become friends with someone who is a stranger. Screen names are completely safe. It is a way to comunicate with friends or family safely.

password A password is a secret word or string of characters that is used for authentication, to prove identity or gain access to a resource (Example: An access code is a type of password). The password must be kept secret from those not allowed access. The use of passwords is known to be ancient. Sentries would challenge those wishing to enter an area or approaching it to supply a password or watchword. Sentries would only allow a person or group to pass if they knew the password. In modern times, user names and passwords are commonly used by people during a log in process that controls access to protected computer operating systems, mobile phones, cable TV decoders, automated teller machines (ATMs), etc. A typical computer user may require passwords for many purposes: logging in to computer accounts, retrieving e-mail from servers, accessing programs, databases, networks, web sites, and even reading the morning newspaper online. Despite the name, there is no need for passwords to be actual words; indeed passwords which are not actual words may be harder to guess, a desirable property. Some passwords are formed from multiple words and may more accurately be called a passphrase. The term passcode is sometimes used when the secret information is purely numeric, such as the personal identification number (PIN) commonly used for ATM access. Passwords are generally short enough to be easily memorized and typed. For the purposes of more compellingly authenticating the identity of one computing device to another, passwords have significant disadvantages (they may be stolen, spoofed, forgotten, etc.) over authentications systems relying on cryptographic protocols which are more difficult to circumvent.

Monitor A visual display unit, often called simply a monitor or display, is a piece of electrical equipment which displays images generated from the video output of devices such as computers, without producing a permanent record. Most newer monitors typically consist of a TFT LCD, with older monitors based around a cathode ray tube (CRT). The monitor comprises the display device, simple circuitry to generate and format a picture from video sent by the signals source, and usually an enclosure. Within the signal source, either as an integral section or a modular component, there is a display adapter to generate video in a format compatible with the monitor.

Desktop Google Desktop is desktop search software made by Google for Mac OS X, Linux, and Microsoft Windows. The program allows text searches of a user's e-mails, computer files, music, photos, chats, Web pages viewed, and other "Google Gadgets."

Document A document (noun) is a bounded physical representation of body of information designed with the capacity (and usually intent) to communicate. A document may manifest symbolic, diagrammatic or sensory-representational information. To document (verb) is to produce a document artifact by collecting and representing information. In prototypical usage, a document is understood as a paper artifact, containing information in the form of ink marks. Increasingly documents are also understood as digital artifacts.

Icon Icon is a very high-level programming language featuring goal directed execution and many facilities for managing strings and textual patterns. It is related to SNOBOL, a string processing language. Icon is not object-oriented, but an object-oriented extension called Idol was developed in 1996 which eventually became Unicon.