For some seniors, the new $50 Kindle 7 inch tablet might be all you need to do all your computer activity. It might be the easiest to use of all computers. Certainly it is ideal for media.
You simply slide your finger right and left across pages for books, movies, web, and so on.
You can also do your writing and communicating and shopping.
You do not have all the bells and whistles but you do have wide functionality.. There is no stereo sound, limited voice recognition, and some (overcomeable by a techie) limitation in accessing Google apps.
Yet there are ways to use the device with keyboard, display, and printer. There is much for the visually impaired, too. This device accommodates adding sd memory, so you can keep your music and photos for access anywhere.