设计一个数字时钟，具有按秒走时功能，能够分别显示小时（2位24小时）、分种（2位）、秒（2位）的功能，以及整点报警功能-Design a digital clock with seconds to go by when the function that displays hours, respectively (two 24-hour), minutes (2), second (2) function, and the whole point of the alarm function