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时针倒拨回20年前,1993年,在北京西单附近的一座小院落里,诞生了我国第一台商用车载卫星导航仪。由北京赛达科贸公司研制的这个产品在社会上引起了轰动:汽车在公路上疾驶,车内的一块9寸液晶屏上,一个神奇的小光标在电子地图上同样在准确地沿着这条公路线蠕动!地图上标绘有公路、居民地、河流、铁路……这台导航仪内置的导航电子地图是采用光栅格式的全国交通图,比例尺很小。道路信息仅能表达到大城市的主干道级别,许多中小城市只能用一个注记点表示。POI信息也少得可怜,在北京这样的城市也只是标注了不足百个地标
Twenty years ago, in 1993, a small commercial courtyard satellite navigator was born in a small courtyard near Xidan in Beijing. Developed by Beijing Saida Electronics Co., Ltd. this product caused a sensation in the community: car driving on the road, a 9-inch LCD screen inside the car, a magical little cursor on the electronic map exactly the same along this Road creep! Map marked roads, residents, rivers, railways ... ... This navigator built-in navigation electronic map is a raster format of the national transport map, the scale is small. Road information can only be expressed in the major cities of the main road level, many small cities can only use a note that. POI information is also pitiful, in Beijing, such cities are only marked less than 100 landmarks