Digital timer was made to timer both count forward and count down. this device has 3 button, including the start button, the reset button, a stop button and the screen is a system of numbers. Suitable for use in patients with timer in the exercise or athletes. Which has advantages and disadvantages as follows.
The advantages of a digital timer. Can use the timer has several times, can tell the time current,. Time can be set in the exercise. And can voice alert.
The disadvantages of digital timer. When the display is not very clear to the charcoal, which is a waste of cost. And sometimes a display program.