Analysts have been predicting that it is only a matter of time before Android expands to desktop computers. This is coming true as Hewlett-Packard (HP) just announced their Android-based desktop tablet. The colossal tablet/desktop running on Android is now happening.

HP announced that it will be putting out a huge tablet - 21.5 inches. It is hardly a mobile computing device, but the company thinks users will see the benefit of the device. The new HP offering may seem impractical for its size and lack of battery, but its added features should force people to think twice.

The massive "tablet" will run Google's Android, include a mouse and keyboard, feature NVIDIA Tegra 4 processor along with a kickstand to set up it as an all-in-one device. One of the more interesting aspects of this announcement is the starting price of the tablet. Prices start at $400. HP's new tablet will hit stores in September. The tablet, an all-in-one device, will become one of the cheapest touch-enabled all-in-one computers running with Windows and HP system.

The 21.5-inch tablet is for the family. As easy it is to dismiss the device as something impractical, HP is not crazy enough to invest on something without potential. The company is releasing this affordable all-in-one device to reach out to families who wish to have a complete but simple user experience. The open source nature of the Android made it an affordable product.

Running on Tegra 4 processor, the 21-inch tablet's price can compete with other Windows-based all-in-one computers on the market. The Slate 21 could be a good choice for many families out there. However, analysts are still surprised that HP chose to go with Android. The operating system is great for mobile and similar devices, but the Chrome OS and others would have suited the desktop setup better. Consumers will have to judge for themselves whether the product delivers.

Android has a massive consumer base. Introducing a desktop-tablet device to this consumer base can put HP ahead of the game especially since an Android-based desktop is still a fresh concept. The familiar and friendly user experience of the Slate 21 should give HP a head start in this competition.