useless trivia: What Word Means: A Hamlet?

Questions

In whose honour was the high level computer language Ada named?

What was advertised in the first interactive British TV ad shown on Ch4 on 26 mar 2000?

The name given to what kind of mechanism is derived from a czech word meaning compusary service?

Ninetails,pikachu,vileplume & weepinbell are all types of what?

In computer talk what is a nibble?