| 摘要: |
| 本文是高程数据库快速存取技术研究目的一部分。文中主要研究了以半导体EPROM存储器为基础，以80369微机为核心的大容量数据库快速存取技术，经过实验提出了在386微机上实现1G字节快速存取的方案。实践证明，使用计算机的I／O口可以实现数十个4G字节的数据存取。在16MHz的系统时钟下，其两个字节的存取时间为5至6μs，与理论计算值相吻合。 |
| 关键词: 数据库 快速存取技术 程序设计 |
| DOI：10.3969/j.issn.1001-893X. |
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| 基金项目: |
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| A Fast Access Technique of 1G Byte Altitude Database |
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| Abstract: |
| This paper, as part of report on the fast access to the altitude database, deals withthe fast access to a mass database, based on EPROM and in support of the microcomputer80386. On the basis of experiments, a scheme is proposed of the construction of a database of1G byte capacity in a microcomputer 386. It has been proved that a capacity of 4G byte is re-alizable via the I/O interface and that it takes 5-6 us to access 2 bytes at 16 MHz of clock,which agrees well with the theoretical value. |
| Key words: Synchronization Satellite Position Finding,Fast Access Altitude Database |
