Tab / document / lyrics display

As you would know, a pda is a touch screen mini computer that is about 90% screen. As a guitar player I hate having to stop playing to lean over and flip over the tab page and some times the page flicks back over or wind blowing the page causes problems, so I was thinking af a tab displayer very similiar to a pda except not as intelligent but an A4 sized pda that connects to your computer allowing you to upload tabs so that you can easily change tabs on a handy "pda" tab displayer with a touch screen menu with at least functions of next page, previous page, up, down and menu buttons which would save a lot of time and be very handy even at night as the screen would be lit so you could easily see the page and this could be used for a lot of things with maybe even attachments available for it such as a keyboard to creat your own doucuments and save them. I'm not asking for a whole computer but only a A4 sized screen mini computer that allows you to perform these functions.