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It's very short. It's absolutely the shortest history ever. 

Slow progress from the days of paper log tables through to calculators. Next came the BBC micro.

University (begun very late in life!) saw an Apple 111.

Then there was a big gap until my saviour arrived in the form of  a son who could understand them and a sister who had the patience to teach me.

The problem of course is that things change so quickly. I feel as if I am at least twenty years behind everyone else!