multitask program 中文意思是什麼
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The original design program of counting data acquisition system continue to use the train of thought within dos operating system, but the multitask operating system windows are absolutely distinguished form dos. because the way of system data transmittance are program inquiring, at the same time the acquisition and transmittance process cannot be interrupted. this data transmittance mode within windows will be disturbed by other program ' s interruption and lost the requested data. so we have improved the original design of cd400bx ict data acquisition system. we shift the data transmittance mode from program inquiring to hard interruption, and install fifo cache in front of data channel, in order to guarantee the stability, reliability of data acquisiton and transmittance
由於計數式數據採集系統的原設計方案沿用了以前dos操作系統下的設計思路，而windows操作系統作為多任務操作系統其運行機制和dos有根本的區別。由於系統採用的數據傳送方式為程序查詢方式，而數據採集和傳送的過程都不能被中斷。在windows操作系統下這種數據傳送方式會因為其他程序的中斷造成數據丟失。 -
The general industrial control software includes graphic interface system, the third party program module, control function module and real - time database system module etc. its main feature is real - time multitask, and the real - time database is its kernel and engine
一般的工控軟體包括圖形界面系統、第三方程序介面組件、控制功能組件、實時數據庫系統等組件。它最突出的特點是實時多任務，而實時數據庫是其核心和引擎。 -
The processor which was adopted in the design is atmega128, this is a low - power cmos 8 - bit microcontroller based on avr enhanced risc architecture. the software adopts the real - time kernel c / os -, the step we do first is the transplanting of the os, the next is to divide the multitask in accordance with the all function of the system and define the pri of each task, the final is to finish the task program
本設計採用了愛特美爾公司的高檔avr高速單片機atmega128作為系統的微處理器；同時在軟體設計上採用了源代碼開放的實時嵌入式多任務操作系統c os - ，將c os -操作系統移植到單片機上，將系統所要實現的功能分成多個任務分別設計任務程序，在操作系統的調度管理下進行系統的運行。
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