Here is the full description: Popularized by the iMac, the all-in-one PC is a desktop with a built-in monitor. The desktop components (processor, memory, hard drive, and such) may be in the base or hidden behind the flat-panel display itself. Like a SFF desktop, an all-in-one limits expansion, but many boast advanced features, such as DVD burners and TV tuners. Because the display and the computer itself are enclosed in a single box, they're generally more space efficient than a traditional tower-and-monitor combination. On the other hand, the PC components will become obsolete faster than the LCD, one drawback of having the two so tightly integrated. If you have a small space in which to setup your computer, an all-in-one can save the day.
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