In a span of less than 22 hours SpaceX managed three Falcon 9 rocket launches and one landing of a Dragon spacecraft. It flew a Department of Defense mission from Cape Canaveral on Monday night ...

下载电缆采用10芯线，标准10脚IDC接头，电缆线一端面向接头的俯视图如图2所示。以AVR单片机ATmega8为例，单片机编程时的接口电路如图3所示。这是Atmega8单片机的最小系统，由于使用了内部RC振荡器作时钟源，所以电路中没有外接晶振电路，因此在设置熔丝位时不 ...