自己编写的作息时间表单片机程序,比如说8点上课,铃声响,8点10秒铃声停止,8点50下课铃声响......此程序可管理学校电铃,以及其他要求作息时间的场合-Their written work schedule SCM procedures, such as 8 o' clock class, a bell rang, 8 Dian 10 seconds ring tones stop, 8:50 after class ring ring ...... this procedure to

this sample for School BEll, with programmable . used assembly code with AT89S52.-this is sample for School BEll, with programmable . used assembly code with AT89S52.