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The '''X1''' <small>(<span lang="ja">エックスワン</span> ''Ekkusu Wan'')</small> is a Japan-only line of home computers created by [[wikipedia:Sharp_Corporation|Sharp]]’s television division. The first model, simply named Sharp X1, was released in November 1982. These computers doubled as TV sets and included many functionalities that made use of this combination, such as the ability to superimpose text to the TV image and, in later models, even to digitally record live television (!), albeit in a compressed 8-colour video format. Despite being powerful for its time, the [[NEC PC-8800 series]] outsold it. The last additions to the X1 line, the X1 Twin, also included a built-in [[PC Engine (TurboGrafx-16) emulators|NEC PC Engine]].
At the time, Sharp was following a ''Clean Computer'' philosophy: this means that, in order to leave the user in control of the RAM, the computer shipped only with an IPL and BIOS. When necessary, operating systems must be loaded using external storage devices, such as cassettes and, in all but the first model, floppy disks.
