Then I thought ..... better keep up to date and have a look at Android (all I can afford) with perhaps a view to writing a little program to remote control things over the network. So I have an Android emulator running on a PC and have "run" the first couple of examples of how to write apps.
My mobile phone is primitive, non Android and non-clever, so I'm starting from a happy state of total ignorance. I went onto ebay and invested in a cheap used Chinese 7" tablet. It seems to be one where all the guts are made by Via and it works much better than I expected.
I realise these things are basically toys, but it looks to have some potential if I can get past the poor instruction book. Is anyone using one of these "as it comes" for anything useful and does anyone have any recommendation for a website or even a book that is worth a visit?