无源蜂鸣器驱动，采用输出频率驱动蜂鸣器，用定时点亮二极管闪烁-Passive buzzer driver, using driver buzzer output frequency with a timing light diode flashes

usbasp.固件，驱动，更新于2009年(USBasp is a USB in-circuit programmer for Atmel AVR controllers. It simply consists of an ATMega88 or an ATMega8 and a couple of passive components. The programmer uses a firmware-only USB driver, no special USB controller is ne