The histories of IT companies’ developments, success, and groundings could fill books of several hundred pages. This book here concentrates on the relatively short, but exotic life cycle of the CDC. For a long time, this Minnesota founded and later became a worldwide leader. CDC was, for a long time only known to specialists. For normal people, it was just one of those IBM machines. CDC and IBM were bitter enemies. IBM survived. This booklet entitled: CDC contains historical, proven, and not so proven rumors intermixed with often humorous human anecdotes which always are related to CDC. The essay tries to explain to the non-computer freaks the hectic time that leads to the completely IT-oriented world in there we live today.