使用AVR单片机解析出GPSRM数据段的信息，提取时间、经纬度、指示出南北半球及东西经、日期、以及当前数据是否有效的标识位-Analysis of the use of AVR Singlechip GPSRM data segment information, extraction time, latitude and longitude, direction and things out of the northern and southern hemispheres, as, date, as well as the validity of current data bits