能够实现小时（24进制）、分钟和秒钟（60进制）的计数功能具有复位功能 功能扩展：具有复位、整点报时提示、定时闹钟等功能 -Able to achieve an hour (24 hex), minutes and seconds (60 hex) is counting function with reset function extensions: with a reset, the whole point timekeeping prompt, regular alarm cloc