PROPOSAL WRITING

Introduction


                                    
                 
                    Figure 1: Analog stopwatch                Figure 2: Digital stopwatch                              

         Stopwatches can be classified into two categories, Type I and Type II. In general, stopwatches are classified as Type I if they have a digital design employing quartz oscillators and electronic circuitry to measure time intervals (Figure 1). Type II stopwatches have an analog design and use mechanical mechanisms to measure time intervals (Figure 2).

                                         

A stopwatch is a handheld timepiece designed to measure the amount of time elapsed from a particular time when it is activated to the time when the piece is deactivated. A stopwatch is controlled by two buttons which is the first button can start and stop the times lap and the second button are to reset the stopwatch to zero. The second button is also functioned to record split time and lap times. When the second button is pressed while the stopwatch is running, the display freezes, allowing the elapsed time to that point to be read, but the watch mechanism continues running to record total elapsed time.

Block diagram

Basic schematic diagram



Bill of materials (BOM)