Hewlett-Packard (HP) is bringing Android to the PC with a 21.5-inch all-in-one desktop installed with Google's operating system. Shown off at an HP event in Beijing on Monday, the HP Slate 21 features a 21-inch high-definition IPS touch screen and installed with Android 4.2.2. The company did not didclose futher details.

Acer has also showed off a 21.5-inch all-in-one installed with the OS at the Computex trade show in Taipei. The Acer N3-220, the desktop uses an 1.6GHz Nvidia Tegra 3 processor and will be available in October.

Both Asus and Samsung have this month unveiled tablet-laptop convertibles that can run both Windows and Android.