What is the primary purpose of a dive computer for a diver?

The primary purpose of a dive computer is to help a diver stay within the no decompression limits on each dive. Dive computers continuously monitor a diver's depth and time underwater, providing real-time information about ascent rates and no decompression limits based on the specific dive profile. By adhering to these limits, divers can avoid incidents associated with decompression sickness, which can occur if they ascend too quickly or exceed their allowable time at certain depths.

Utilizing dive computers promotes safe diving practices by allowing divers to plan their dives effectively and manage their gas exposure throughout the entire dive. This real-time capability is crucial for ensuring that divers make safe and informed decisions as they navigate their underwater experiences.