Debugging for Dummies
Here's a great letter from the 'Letters of Note' web site which tells the unlikely tale of how the phrase 'debugging the computer' acquired its name.
@LettersOfNote - Twitter
https://www.cs.auckland.ac.nz/historydisplays/FifthFloor/LogicAndSwitching/HarvardMark1/HarvardMark1Pictures.php