The iPad has a touch-screen that is just under 25 centimeters in diagonal.
VOA: standard.2010.04.03
The surfcentres have a fruit-machine-like appearance with 500mhz computers under an angled-screen front that allows easy access to the keyboard but is designed to prevent damage from beer spillages.
The project is one of several large-screen technologies under development by Microsoft which it believes will become more common both at work and home in the future.