数据硬件读写方案在TMIS中的实现研究

Studies on the Hardware Read-Write Program’s Availability in TMIS

针对TMIS中数据难以用第三方软件方式交互式访问的现状,本文提出了用硬件方式实现数据的读取与写入,避开在软件方法上开发资料不全、数据库须与操作系统接口统一等难题。文中讨论了方案的实现过程,并给出基于并行总线获取数据、通过PS/2总线模拟键盘输入的硬件电路与实现过程。

Given that the data in TMIS can hardly be interactively visited by the use of the third-party software for the present time,the paper puts forward the idea of realizing data read-write by means of hardware so that such problems as a lack of data in developing a software and the database’s consistency with operating system interface can be avoided. The paper discusses the realization process of the hardware read-write program and illustrates the hardware circuit and realization process of procuring data based upon the parallel bus line and modeling keyboard input through PS/2.