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 to be the "no stopping time remaining".
Different preferences
Although there are many differences in the functions of different dive computers, they all perform the same basic functions such as tracking nitrogen loading and ascent rate and displaying the depth. Divers might choose to use a different type of computer because they have different NDL times. Divers may choose to use a different type of computer than what is recommended. It is important to plan your dive before purchasing a computer, and to test them out before you decide which model will be best for you.
Functions
A dive computer helps you to stay underwater safe. 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. The calculations are not difficult to understand, but it's important to be familiar with the range of your computer's liberal-conservative bias. A liberal-leaning dive computer is the best option if you want maximum bottom time and safety.
Display
Whether wrist-mounted or mounted on a submersible pressure gauge, a dive computer's display screen provides the necessary data to avoid decompression and ensure a safe dive. 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. The features of a divecomputer can be invaluable in determining the cause and other purposes.
Safety limits
Diver computers can calculate decompression times using a range algorithm. The acceptable DCS numbers range from 2 to 5 percent. However, individual susceptibility and accidents can affect the figures. The US Navy as well as commercial divers want to see 0.025 percent of serious DCS. For maximum safety, a divecomputer should be able run decompression algorithms correctly. Divers may find it difficult to use a computer to dive.
Cost
Diver accidents can be prevented by choosing the correct computer for you. These devices use algorithms that determine how long a diver can remain underwater. While most diving computers have the same algorithm, every diver is unique. Divers will have different fitness levels and body compositions. Some computers will recommend more stops than others. Others may recommend more no-flys. It doesn't matter what dive computer you choose; it will allow you to stay underwater for longer periods of time and lower the chance of getting decompression sickness.