用汇编语言设计了一个具有特定功能的电子钟。该电子钟上电或按键复位后能自动显示系统提示符“P.”， 进入时钟准备状态；第一次按电子钟启动/调整键，电子钟从0时0分0秒开始运行，进入时钟运行状态；再次按电子钟启动/调整键，则电子钟进入时钟调整状态，此时可利用各调整键调整时间，调整结束后可按启动/调整键再次进入时钟运行状态。-Assembly language designed an electronic clock with specific functions. Electrical or electronic bell on the reset button can automatically display system prompt " P." , enter the clock readiness　electronic clock first press Start/adjustment key, electronic clock starts running from 0:00:00 to enter the clock running　again by electronic clock start/adjustment key, the electronic clock into the clock adjustment of status, then you can make use of the various adjustments to adjust the time, after adjustment as start/adjust key to enter the clock running again.