All-in-one PCs, also known as all-in-one desktops, integrate the computer case and system components into the monitor so that the entire PC is contained all in one unit. All-in-one (AIO) desktop PCs offer the advantage of a smaller form factor than desktop PCs, but they often come with several drawbacks as well, including higher cost, weaker performance and limited upgrade options.
The all-in-one computer design debuted with the Apple iMac in 1998. While the early all-in-one PC computers were expensive and bulky, all-in-one PCs have become much slimmer, lighter and cheaper with the advent of LCD monitors and smaller, less expensive desktop system components.
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