【摘要】 论述了用８０３１单片机研制小型多功能应用系统，这种系统具有多功能数字钟、频率检测仪、方波信号发生器、音乐演奏、数据采集、数／模转换输出等功能．更多还原

【Abstract】 The small - scale multi - function applying system is discussed with microprocessor 8031. The system has these functions: it is used as multi - function quartz clock, frequency instrument and square wave signal generator, this system acts also as playing music instrument,input data acquisition and output data D/A conversation.更多还原