Introduction - If you have any usage issues, please Google them yourself
Design of electronic stopwatch circuit with MCS-51 microcontroller;
2., select 4 digit LED digital display, counting time 0-9999s, adjustable timing time;
3., the hardware design selects the appropriate microcontroller according to the design task, and designs the interface circuit according to the control object. The designed unit circuit must have the working principle, the function of the device, the analysis and calculation process;
4. software design, according to the circuit work process, draw a software flow chart, according to the flow chart to write the corresponding procedures, debugging, and print list of procedures;
5. schematic design, according to the identified design circuit, the use of Protel and other related software tools to draw circuit schematics, PCB board diagram,