Transcript Slide 1
Video Card COMPUTER • An electronic device that accepts input, processes data, stores data, and produces output as information. COMPUTER SYSTEM • The computer along with any software and peripheral devices that are necessary to make the computer function. Computer Memory • Temporarily holds computer data waiting to be processed, stored, or output. TWO TYPES OF MEMORY: RAM (Random Access Memory) – A type of computer memory circuit that holds data, program instructions, and the operating system while the computer is on. ROM (Read Only Memory) – examples are CD’s and DVD’s Computer Storage • Holds computer data on a permanent basis when it is not immediately needed for processing. While you are working on a document, it is in memory; it is not in storage until you save it for the first time. Hardware • Refers to the electronic and mechanical parts of the computer. Software • A computer program that tells the computer how to perform tasks. Digital Revolution • An ongoing process of social, political and economic change brought about by digital technology. Digital technology includes digital devices such as computers, portable media players, camera, mobile phones, smartphones, tablet computers, global positioning systems (GPS’s), DVD and CD players, e-book readers, digital voice recorders and video games. Peripherals • Additional hardware that isn’t necessary for a computer to function, but does enhance how the computer can be used (examples are scanner, webcam, microphone). Storage Device • External hardware used to store and retrieve data, such as a disk drive, CD/DVD drive, or flash drive. Operating System • system software that acts as a "go-between", allowing computer hardware and other software to communicate with each other (e.g., Windows 8, Mac OS 10.7, Linux, Unix, etc.) Folder • an organizational element of a computer operating system used to group files There can also be subfolders where folders are created within another folder. COMPUTER CLASS Word Documents Excel Powerpoint Documents Documents Document • a computer file containing information input by a computer user and usually created with an application Rename • to change the title of a document Delete • to erase a document from a computer Word Processing • the use of software application to create, edit, format, print and save text-based documents, such as letters,reports, and memos Spreadsheet • a grid of rows and columns containing numbers, text, and formulas used to perform calculations Database • a collection of organized data that allows access, retrieval, and use of data Presentation • an application that allows the user to create and save slides to use as a slide show Input Device • A device such as a keyboard, mouse, or touch screen. It helps you enter information into the computer. The input device and the computer work together to change the information into a series of electronic signals that computer can understand. Output Device • Once the computer has the input, it processes the information and sends the processed information to an OUTPUT DEVICE. Common output devices include monitors, printers, or speakers. Filename • Every file on a computer has a filename, which should provide meaningful information about the file contents. The filename has two parts: the filename and the file extension. Server • A computer on a network that supplies the network with shared data and storage. Modem • A device that sends and receives data to and from computers over cable, satellite, or telephone lines. Internet • The largest computer network in the world. It is a collection of local, regional, national and international computer networks. These networks are linked together to exchange data and share processing tasks. URL Uniform Resources Locator • The URL for a web page indicates the computer on which it is stored, its location on the Web Server, the folder name or names indicating where it is stored, its filename, and its file extension. http://www.nps.gov/yose/index.htm blue = web protocol standard green = web server name brown = folder name red = document name and file extension RECYCLE OLD COMPUTERS!!! • In this world of rapidly changing technology, disposal of computers and other electronic equipment has created a new and growing waste stream. • U.S. landfills already hold more than 2 million tons of computer parts, which contain toxic substances such as lead, phosphorus, and mercury. Bit • The smallest unit of information handled by a computer; can hold one of two value, either a 0 or a 1. Eight bits make up one byte which can represent a character, such as a letter or number. Byte • An 8-bit unit of information that represents a single character. Kilobyte • KB • Approximately 1000 bytes, exactly 1,024 bytes. Megabyte • MG • Approximately 1 million bytes, exactly 1,048,576 bytes. Gigabyte • GB • Approximately one billion bytes, typically used to refer to RAM and hard drive capacity Backup • A duplicate copy of a file, disk, or tape. Cloud Computing • A method of offering Internet accessible computing services ranging from office productivity applications to complex corporate data processing. Function Keys • One of the keys numbered F1 through F12 located at the top of the computer keyboard that activates program specific commands. IP address • A unique identifying number assigned to each computer connected to the Internet. Password • A special set of characters used to restrict access to a computer or network.