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Central Processing Unit executes commands from a computer's hardware and software Input Device a device used to enter data into the computer Output Device a device that allows the user to view or listen to the data a computer processes Logon the action of gaining access to a computer or a network by entering a username and password Storage Device external hardware used to store and retreive data Operating System system software that acts as a go-between, allowing computer hardware and other software to communicate with each other System Unit a computer case that contains the CPU, memory, power supply, and storage Memory computer chips that store data and programs while the computer is working. It is often called RAM or Random Access Memory System Software the software responsible for the general operation of a computer system, including the operation of hardware, running application software, and file management Peripheral additional hardware that is not necessary for a computer to function, but does enhance how the computer can be used Copy to place a copy of selected text on the Clipboard or Office Clipboard Cut to remove selected text and place it on the Clipboard or Office Clipboard Print Preview a way of viewing a document on screen that enables you to see the document as it will appear when printed Landscape Orientation a page or worksheet rotated so it is wider than it is long Portrait Orientation a page or worksheet rotated so it is longer than it is wide Drag-and-drop to drag selected text from one place in a file to another Find is a command that lets you specify how to locate data in a file Format to change the appearance or look of text Paste to copy an item stored on the Clipboard or Office Clipboard to a location in a file Word Processing the use of a computer and software to enter and edit text and produce documents such as letters, memos, forms, and reports Font the design of text Point the measurement unit for font size Margin blank space around the top, bottom, and sides of a page Bullet any small character that appears before an item in a list Alignment the position of text between margins Indent the space between the text and the margin Tab stop an indicator in a paragraph that marks the place where the insertion point will stop when you press the Tab key