In the tech world, smaller is better. Whether it's an iPad Mini or nano-technology used to create faster hard drives, the demand is for smaller gadgets and computers with increased processing power.

Chinese retailers recently began selling the MK802 Android 4.0 Mini PC -- the newest device in the USB-sized family. Housed in a 3.5-inch plastic case, the Android PC, contains an AllWinner A10 single-core 1.5GHz ARM CPU, a Mali 400 GPU, and 512MB of RAM.

The defining characteristic of this tiny PC is not the processing power, but the price. At $74, the Android PC is one of the most inexpensive on the market for its size.

Recently, techies hailed the FXI Cotton Candy as the world's smallest PC. The size of a USB drive, The Cotton Candy is small, but not cheap, priced at $199.