Swimming timer

A swimming timer, comprising:

• a fluid container holding a Newtonian fluid fully inside with a fluid hole opened at the top end of the fluid container so that the Newtonian fluid is able to flow toward and through the fluid hole when the fluid container is touched to cause deformation, compression and volume decrease;
• a fluid channel with one end connected to the fluid hole of the fluid container to receive the flow out of the Newtonian fluid when the fluid container is touched to cause deformation, compression and volume decrease;
• a fluid sensor connected to the other end of the fluid channel to detect the flow of the Newtonian fluid in the fluid channel continuously and to generate electronic signals accordingly;
• a control circuit board providing with a central processing unit, a memory unit and plural Input and Output units that the control circuit board is connected electrically with the fluid sensor and a display device, and is built-in with drivers to operate the fluid sensor and the display device;
• and
• a display device connected electrically to the control circuit board to receive and display the computation results of the control circuit board;
• the fluid container mounted and equipped on two side-walls of a lane in a swimming pool so that a swimmer starts, turns around and reaches the end to touch and compress the fluid container will cause the Newtonian fluid in the fluid container to flow through the fluid holes into the fluid channels allowing the fluid sensors to detect the flow of the Newtonian fluid in the fluid channels.