电子秒表，在硬件上实现电子秒表，主要用8279键盘/显示芯片，8259A中断控制器，8253定时/计数器以及8255A并行接口芯片-electronic stopwatch in electronic hardware stopwatch, mainly 8279 keyboard / Chip, 8259A interrupt controller, 8253 timer / counter and 8255A Parallel Interface Chip

电子秒表。利用VC＋＋实现简单的计时。可以了解VC中定时器的使用方式，以及对系统时间的获取方式。-electronic stopwatch. VC + + realization of a simple time. VC can understand the use of the timer, as well as the system time access methods.

89c51实现电子秒表设计的电路图与源程序