system timer

Linux ′ s kernel source code, its architecture, process scheduler, task queue, synchronization, system timer are analyzed in great detail.

对Linux的内核源代码进行了分析，且着重于其核心服务机制的组织结构、进程调度、任务队列机制、同步机制、系统定时机制的剖析。

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Due to relations between hardware and software, this paper also introduces much knowledge about hardware resources of PC compatible system, such as programmable interrupt controller, system timer, PCI bus and related interface chip.

由于软硬件的相关性，本文同时也对PC兼容体系的硬件资源有较多介绍，如可编程中断控制器、系统时钟、PCI总线及接口芯片，体现了嵌入式应用软硬件结合的突出特点。

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The performance testing of the real-time operating system ( RTOS) μ C/ OS includes the speed of message transferring and the speed of task switching and timer interrupt handling, the speed of signal task synchronization, and its functions are completed by compatible PC.

嵌入式实时操作系统μC/OS-II的性能测试对象包括消息传输、任务切换和时钟中断处理时间，及信号任务同步速度，由两台兼容PC完成。

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Control system of power supply for HT-7 diagnostic neutral beam source was composed of PLC, timer and master control logic. The experimental results show the good facility and reliability.

HT-7中性束诊断电源系统的计算机控制系统由PLC、工控机、逻辑控制和定时单元等组成。

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The design of the flow regime recognition system has been presented in the dissertation, including the selection of metering equipment, the driver development of sampling card and system timer, application of multi-threading technique, serial communication and the measurement database in detail.

文章详细地给出了系统的方案设计，测量装置的选取，采样板卡的驱动开发，串口通信及多线程技术和系统定时器的应用，以及数据库的设计开发。

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The three available methods about timer of control software based on windows 9x are studied, which are system timer, multimedia timer, VxD and thread.

针对Windows9x操作系统，研究了实时控制软件的几种可能的定时方法：系统定时、多媒体定时、VxD和线程中加轮询方式。

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The Intel programmable timer 8254 system to generate and sample PWM waves.

并利用可编程计数芯片8254实现了PWM波形的产生与采样.

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A controlling means of PZT driving system was introduced in detail. By application of DLL library for PZT power supply and Timer control of VB, the real-time programmable output of control voltage was realized.

给出了一种压电陶瓷驱动系统的控制方法，利用VB中的Timer控件和压电陶瓷电源的DLL动态连接库函数，实现了控制电压的实时可编程输出。

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The sampling system is controlled by an adjustable program timer or by a manual pushbutton.

取样系统用可调程序定时器或手动操作的按纽控制.

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A 16-bit timer control unit is designed, which is an IP core for an embedded system. The JTAG test circuit is also adopted in the design.

文章介绍了应用于嵌入式系统的16位时钟控制器（TimerControlUnit）的IP核设计，设计中采用了JTAG可测性设计电路。

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The Design of 7-Period Timer Control System of a Toaster

多士炉7段定时控制系统的设计

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This paper brings forward three feasible solutions ( time program, timer and counter, time chip) to the realization of the timing function of MCU application system, and also makes detailed analysis of and comparison among them.

本文就微控制器应用系统定时功能的实现，提出了使用定时程序、定时/计数器、定时芯片实现定时功能三种可行的设计思路，并详细地进行了分析与比较。

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An Improvement Mechanism of Timer System Based on Linux Operation System

一种基于Linux操作系统下时钟系统的改进机制

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