
A dive computer will provide the main piece of information, which is the no stop limit. The computer program will calculate the no-stop limit by taking into account air depth and air volume. It will also provide data about when to start or stop decompression. This data is also known as the "no stop time remaining."
Preferences of different people
There are many differences among different dive computers. However, all of them perform the same basic functions like displaying depth and tracking nitrogen loading. Divers may prefer to use one type of computer over another, as it provides different NDL times. Divers may choose to use a different type of computer than what is recommended. As such, it's important to plan a dive before buying a dive computer and to compare different models before deciding which one will work best for them.

Functions
Dive computers are designed to keep you safe underwater. It runs calculations based on your information, and then compares that information against the corresponding dive tables to determine how much time you have at depth. You don't have to be a math genius to understand the calculations, but you should have a good idea of where your dive computer falls on a liberal-conservative spectrum. If you want to maximize your bottom time while building safety in the process, a liberal-leaning computer will be the right choice.
Display
A dive computer's screen can be worn on the wrist or attached to a submersible pressure gauge. It provides all necessary information to prevent decompression and ensure safe diving. Divers may appreciate additional features like the compass directions and water temperature. Dive computers can even be used to save data to a personal computer. This may prove useful for accident investigators. With these features, a dive computer can prove invaluable for a number of purposes, including determining the cause of an accident.
Safety limits
Diver computers employ a variety of algorithms to calculate decompression times. While the numbers for acceptable DCS range from two to five percent, they vary based on individual susceptibility and accidents. The US Navy and the commercial diving community often wish to achieve 0.1 percent mild or 0.025 percent serious DCS. To ensure maximum safety, a dive computer should be able correctly run the decompression algorithm. But diving with a computer can be more complicated than it looks.

Cost
To avoid accidents when diving, it is important to select the best dive computer. These devices use algorithms to determine the maximum time a diver can stay under water. The algorithms of most dive computers are fairly generic, but each diver will have slightly different body composition or fitness levels. Therefore, some machines will recommend more stops than others. Some machines will recommend more no-flys than others. Whatever dive computer choice you make, it will let you stay under water longer and decrease the likelihood of suffering from decompression sickness.