Complex sentence: The software crisis was a term used early in the days of software engineering, before it was a well-established subject, to describe the impact of the rapid increases in computer power and the complexity of the problems which could be tackled.
Split into simpler sentences: The software crisis was a term used in the early days of software engineering, before it was a well-established subject. The term was used to describe the impact of rapid increases in computer power and the complexity of the problems which could be tackled.