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PC—1500计算机在测绘行业应用十分广泛,许多单位都购置有该机并编制有各种计算程序。许多测绘单位应用PC—1500机代替电子手簿采集数据或做记录。但是,该机也存在一定不足,内存小,速度慢,磁带不宜保存和调用。尤其是一些程序磁带需要经常翻录,时间一久信息减弱,给长期保存和使用带来一定困难。 为扩大PC—1500机的应用领域,提高PC—1500机的使用率,有必要解决PC—1500机与IBM—PC机的双向通信问题。实现IBM—PC机与PC—1500机的联结,把PC—1500机采集的数据传递到IBM—PC机并存入磁盘,可以长期保存和随时调用;可以避免人工键盘键入数据的重复劳动,提高工作效率,减少差错机会;同时将PC—1500机的程序存入磁盘,使程序信息长期保存。另外,由于微机屏幕大,在微机上编制PC—1500机应用
PC-1500 computer in the mapping industry is widely used, many units have purchased the aircraft and the preparation of a variety of calculation procedures. Many mapping units use PC-1500 machines instead of electronic handbooks to collect data or record. However, there is a certain lack of aircraft, memory, slow, tape should not be saved and called. In particular, some program tapes need to be frequently ripped, resulting in weakened information over a long period of time, creating some difficulties for long-term preservation and use. In order to expand the application field of the PC-1500 and improve the utilization of the PC-1500, it is necessary to solve the bidirectional communication problem between the PC-1500 and the IBM-PC. Realize the link between IBM-PC and PC-1500, and transfer the data collected by PC-1500 to IBM-PC and save it to disk for long-term storage and recall at any time; it can avoid duplication of manual data input and increase Work efficiency, reduce the chance of error; at the same time PC-1500 machine program stored in disk, the program information long-term preservation. In addition, due to the large computer screen, PC-1500 computer applications in the preparation of PC