Copy Definition

Copy Definition Many software programs allow you to copy data, such as text in Microsoft Word or an image in Adobe Photoshop. To copy a piece of data, you need to first select it (or highlight it) and choose "Copy" from the Edit menu within the program. Most programs allow you to use the keyboard shortcut "Control-C" for Windows or "Command-C" for the Mac OS. When you copy a piece of data, it is moved to a buffer in the system's memory called the "Clipboard." This is a temporary storage area...
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Document Definition

Document Definition A computer document is a file created by a software application. While the term "document" originally referred specifically to word processor documents, it is now used to refer to all types of saved files. Therefore, documents may contain text, images, audio, video, and other types of data. A document is represented with both an icon and a filename. The icon provides a visual representation of the file type, while the filename provides a unique name for the file. Most doc...
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High Sierra Definition

High Sierra Definition High Sierra is the common name of macOS 10.13. It is the 14th version of Apple's desktop operating system, and follows Sierra, macOS 10.12. Apple released macOS High Sierra on September 25, 2017. The similarity of the name "High Sierra" to "Sierra" is not coincidental, as it was designed to be a performance update rather than major feature update. Previous performance updates include Snow Leopard (which followed Leopard), Mountain Lion (which followed Lion), and El...
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Mac OS Definition

Mac OS Definition This is the operating system that runs on Macintosh computers. It is pronounced, "mack-oh-es." The Mac OS has been around since the first Macintosh was introduced in 1984. Since then, it has been continually updated and many new features have been added to it. Each major OS release is signified by a new number (i.e. Mac OS 8, Mac OS 9). Since the core of the Mac OS was nearly decades old, Apple decided to completely revamp the operating system. In March of 2001, Apple intro...
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Unmount Definition

Unmount Definition Unmounting a disk makes it inaccessible by the computer. Of course, in order for a disk to be unmounted, it must first be mounted. When a disk is mounted, it is active and the computer can access its contents. Since unmounting a disk prevents the computer from accessing it, there is no risk of the disk being disconnected in the middle of a data transfer. Therefore, before removing an external data storage device, such as a USB flash drive, the disk should be unmounted to avoi...
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Disk Image Definition

Disk Image Definition A disk image is a software copy of a physical disk. It saves the entire data from the disk, including the file structure and all files and folders from the disk, in a single file. Because disk images are exact copies, or "clones," of original disks, they can be used to duplicate disks or serve as full backups in case a system restore must be done. Disk images can be created from both hard disks and optical media, such as CDs and DVDs. However, optical media images are t...
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Desktop Definition

Desktop Definition The desktop is the primary user interface of a computer. When you boot up your computer, the desktop is displayed once the startup process is complete. It includes the desktop background (or wallpaper) and icons of files and folders you may have saved to the desktop. In Windows, the desktop includes a task bar, which is located at the bottom of the screen by default. In Mac OS X, the desktop includes a menu bar at the top of the screen and the Dock at the bottom. The deskt...
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Compile Definition

Compile Definition When programmers create software programs, they first write the program in source code, which is written in a specific programming language, such as C or Java. These source code files are saved in a text-based, human-readable format, which can be opened and edited by programmers. However, the source code cannot be run directly by the computer. In order for the code to be recognized by the computer's CPU, it must be converted from source code (a high-level language) into machi...
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Text Editor Definition

Text Editor Definition A text editor is any word processing program that you can use to type and edit text. Hey, they don't call it a text editor for nothing... Word Pad and NotePad for Windows and SimpleText and TextEdit for the Mac are common text editors. Larger programs such as Microsoft Word and Word Perfect are also text editors, but they have many more features. You can actually write HTML code and create HTML pages with a simple text editor, as long as you know the correct HTML synt...
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Mount Definition

Mount Definition In order for a hard disk or disk partition to be accessible by a computer, it must first be mounted. This is a software process that "activates" the disk, which makes the folders and files on the disk readable by the computer. If a hard drive is physically connected, but not mounted, the computer will not recognize it. Fortunately, most operating systems, such as Windows and Mac OS X, mount newly connected disks by default. In Windows, the disk will appear in the "My Com...
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