DIVE COMPUTER

A diving computer provides not only a digital, but also a graphic display of depth for a safety stop and a decompression stop, thereby providing a safe diving watch enabling prompting of a diver for simple maintenance of depth, and has a timekeeping means for keeping the diving time, a measuring means for measuring diving information, a calculating means for processing diving information obtained from the measuring means, and a displaying means for displaying diving information obtained from the calculating means, wherein the display means minimally has a first display function for displaying the current depth of the diver and a second display function for graphically displaying information giving an instruction for a safety operation.