using the method and the design clew of the language vhdl, the module functions of single-chip microcomputer 8051, such as cpu module, timer or counter module, memory module and d/ a converter module are achieved and proved to meet the demand.

it is proposed that data acquisition is controlled by the timing interrupt which is generated by the timer or counter of industrial control computer with std bus. the programing technique and detailed c language source code program are given out.

提出了一种利用STD总线工业控制机自身的定时器/计数器产生定时中断来控制数据采集的方法，给出了应用时的编程技术和具体的C语言源程序。

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results show that: ( 1) the general timer/ counter ( t/ c) method is simple and convenient, but only suitable for the situation that the executive time among all the assignments is not overlap;

结果表明：（1）通用型定时器/计数器（T/C）方法简便易行，但只适用于各任务间执行时间不重叠的情形；

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this paper introduces the designing principle and construction of a multipurpose pc bus computer interface card, which unites a/ d converter, d/ a converter, timer/ counter and di/ do.

本文介绍了一种集A/D转换、D/A转换、定时器/计数器及DI/DO于一体的多功能PC总线计算机接口卡的设计原理与结构。

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the programmable timer/ counter 8254 is used to construct the digital controller of the linear ccd. the digital controller adjusts the period of the linear ccd integrate signal.

用可编程定时/计数器8254构成线阵CCD光积分控制信号周期的数字调节器。

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the paper introduced a method to realize shifting digital phase of two signals of same frequency based on singlechip, and realize frequency adjustment by pll and timer/ counter 8253.

介绍基于单片机实现两路同频信号间数字移相，并利用锁相环和定时/计数器8253改变两路信号频率的方法。

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a testing and analysis system used in rotor vibration bode diagram is introduced. the system is based on a high_performance data acquisition card and a timer/ counter card.

介绍了一种利用高性能数据采集卡及定时/计数器卡对转子振动波德图进行测试与分析的系统。

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two control ways for a single chip timer/ counter is utilized in this system. to achieve timing it compares the control time with the clock time.

本系统利用单片机定时器/计数器具有的两种控制方式，采用将待控时间与时钟时间相比较的方法实现定时。

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expansion of timer-counter presetting

定时器和计数器外部予置的扩展

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the realization method that uses a programmable timer/ counter 8254 to measure the pitch error of the ball screw shaft is introduced.

介绍了利用可编程定时/计数器8254测量滚珠丝杠螺距误差的实现方法。

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by using the 8253 timer/ counter, the a/ d convertor can accurately control the sample interval arbitrarily.

通过将8253定时器／计数器引入A／D转换电路，使其具有能任意设定并精确控制采样间隔的功能；

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in this paper, we introduce three methods about extending the range of the timer/ counter in mcs-51.

介绍三种扩展MCS－51单片机的定时/计数范围的方法。

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this paper discusses the application of isp technology in electronic design automation with practical examples in the development of timer/ counter interface chip.

结合定时/计数接口芯片的开发实例，讨论了ISP技术在电子设计自动化中的应用。

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extending the range of the timer/ counter in mcs-51

MCS-51单片机定时/计数范围的扩展

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an automatic counting system of product line which uses a timer/ counter 8253 was introduced in this paper.

介绍一种基于可编程定时/计数器8253在生产中的自动计数系统。

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the method of parameter setting up with numbered switch for timer and counter of plc

用拨码开关对PLC定时器和计数器参数设定的新方法

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programmable timer/ counter 8253/ 8254 contains three 16 bit counters.

8253/8254是通用可编程定时器/计数器，内含3个彼此独立的16位计数器。

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however, the other functions in the timer or counter can still be used just as they are.

然而，定时器或计数器的其他功能仍然可以使用。

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applications of the timer and counter of mcs-51 single chip microcomputer in measurement and control system

MCS-51单片机计数器/定时器在测控系统中的应用

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the method to improve the output frequency accuracy of programmable timer/ counter used as pulse generator

可编程定时/计数器作脉冲信号发生器时提高输出频率准确度的方法

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application of programmed timer/ counter 8253 in production

基于可编程定时/计数器8253在生产中的应用

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