
A dive computer will provide the main piece of information, which is the no stop limit. A computer program will take into account depth and air in order to calculate this limit and offer data on when to begin the ascent or decompression stop. This information is also called the "no stop remaining" data.
Different preferences
There are several differences between different dive computers, but most do the same basic functions, such as displaying depth, tracking nitrogen loading, ascent rate, and logging the dive. Divers can choose to use one type or another of the dive computers because it has different NDL times. Therefore, the settings recommended for a particular computer may differ from those for another diver. 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
A dive computer is designed to help you stay safe when you're underwater. It calculates based on your information. Next, it compares that information to the dive tables in order to calculate how much time you have at sea. It doesn't take a genius math mind to understand the calculations. However, you should have an idea of where your diver computer falls on the liberal-conservative spectrum. A liberal-leaning computer is the best choice if you want to maximize your bottom line and increase safety.
Display
The display screen of a dive computer can be mounted on a pressure gauge or wrist, and provides information that will help you avoid decompression while diving. Some dive computers also offer extra features, such as compass direction and water temperature, which may be important to divers. Dive computers can even be used to save data to a personal computer. This may prove useful for accident investigators. A dive computer is able to perform many functions, including helping to determine the cause of an incident.
Safety limits
Diver computers use a range algorithms to calculate decompression rates. The acceptable DCS numbers range from 2 to 5 percent. However, individual susceptibility and accidents can affect the figures. The US Navy, commercial diving and other organizations often strive to achieve DCS levels of 0.1 percent or 0.025%. To ensure safety, a dive computer must be capable of running the correct decompression algorithms. However, diving with a dive computer may not be as simple as it seems.

Cost
To avoid accidents when diving, it is important to select the best dive computer. These devices use algorithms in order to determine how long a diver will be able stay underwater. While most diving computers have the same algorithm, every diver is unique. Divers will have different fitness levels and body compositions. Some machines will recommend more stops than other. Others will recommend a greater number of no-flys. Whichever dive computer you choose, it will help you stay underwater longer and reduce the risk of decompression sickness.