What is a key feature of modern-day dive computers?

A key feature of modern-day dive computers is their ability to include advanced algorithms and data analysis. This functionality allows divers to track not only their time underwater but also to monitor depth, ascent rate, and nitrogen absorption levels based on dive profiles. These algorithms help in managing decompression schedules and minimizing the risk of decompression sickness, tailored to the specific dive conditions and diver's individual physiology.

In contrast, other features such as only tracking time underwater, lacking user input, or being limited to recreational diving do not accurately represent the comprehensive capabilities that modern dive computers offer. They are designed to provide detailed insights and continuous monitoring, significantly enhancing safety and efficiency during diving activities across various types of dives, not just recreational ones.