说明：  类似LED手电筒的三档调光带记忆程序源码(汇编),编译环境：AVR Studio 4,调试通过。电源为6v铅酸蓄电池（也可以用锂电池，但要修改相应参数），设欠压保护5.25v,低于此值则进入休眠状态,主频通过熔丝位设为4.8MHz,电源开关作为开关和换档,快速连续按键视为换档操作，慢速只有开关功能,类似于手电筒调光。
(Similar LED flashlight Three dimming with memory program source code (assembly), the compiler environment: AVR Studio 4, debugging through. Power for 6v lead-acid batteries (lithium batteries can also be used, but to modify the parameters), set undervoltage protection 5.25v, below this value into hibernation, clocked by the fuse bits to 4.8MHz, the power switch as switch and shift, shift operation considered key in quick succession, only the slow switching function, similar to the flashlight dimming.)