What is the primary purpose of a dive computer?

The primary purpose of a dive computer is to calculate dive depth and time. This is essential for ensuring diver safety by monitoring key parameters that influence dive planning and execution, such as no-decompression limits and ascent rates. A dive computer provides real-time data on how deep a diver is and how long they have been underwater, which helps in avoiding decompression sickness by guiding divers on safe ascent times and intervals.

While monitoring air pressure can be important for a diver's safety, this function is typically carried out by a separate piece of equipment, such as a pressure gauge or tank gauge, rather than the dive computer itself. Estimating water temperature can enhance the diving experience, but it is not the primary function of a dive computer. Similarly, tracking dive locations might be useful for record-keeping or navigation but is not central to the main functions of dive computers. The focus of a dive computer is primarily on depth and time management to enhance diver safety and improve dive planning.