A computer dive computer supplies the only piece of information that is important: the no-stop limitation. Computer programs will use depth and air to calculate the limit and provide information on when to ascent or decompression. This information is also called the "no stop remaining" data.
Different preferences
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. 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 performs calculations based upon your information. Then, it compares this information with the appropriate dive tables to determine your depth time. Although you don't need to be an expert in math to understand the calculations, it is helpful to have a general idea of where your computer falls within the liberal-conservative spectrum. Liberal-leaning computers are the best for maximizing your bottom time and ensuring safety.
Display
The dive computer's display screen, whether mounted on a wrist-mounted pressure gauge or mounted on a submersible water gauge, provides data that can help to avoid decompression. Divers may find it useful to have additional features such as water temperature and compass direction. A few dive computers also allow users to download data to their personal computers, which could be very useful to accident investigators. These features make a dive computer invaluable, and can even be used to determine the cause of an accident.
Safety limits
Diver computers employ a variety of algorithms to calculate decompression times. Acceptable DCS can range from 2-5 percent. But, each person's susceptibility to injury and accident will affect how much they are acceptable. The US Navy and the commercial diving community often wish to achieve 0.1 percent mild or 0.025 percent 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
Choosing the correct dive computer for your needs is essential to prevent any accidents while diving. These devices use algorithms to determine the maximum time a diver can stay under water. Most dive computers use the same algorithms but every diver has a different body composition and fitness level. Some machines will recommend a greater number of stops than others. Others may recommend more no-flys. You can stay underwater for longer with any dive computer, regardless of what brand.