A Microsoft tablet PC is like a big phone that you can use to do school work or play games. It has a big screen to look at, just like your TV or your computer. You can use your finger to touch the screen and make things happen, like moving pictures or typing words. You can also use a special pen called a stylus to write on the screen and draw pictures. It's like having a small computer that you can carry around with you wherever you go, and it's made by a company called Microsoft.