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Description: 在操作系统中，由于进程总数多于处理机，它们必然竞争处理机。进程调度的功能就是按一定策略、动态地把处理机分配给处于就绪队列中的某一进程并使之执行。根据不同的系统设计目标，可有多种选择某一进程的策略。有两种基本的进程调度方式，即剥夺方式(preemptive mode)和非剥夺方式(non-preemptive mode)。前者指就绪队列中一旦有优先级高于现行进程优先级的进程出现时，系统便立即把处理机分配给高优先级的进程。当然，被剥夺了处理机的进程的有关状态和上下文都必须妥善保存以便今后恢复。后者是，一旦处理机分给了某进程，除非该进程的时间片已满或它主动放弃处理机引起进程调度的原因与操作系统的类型有关，大体可归结为以下几种：
(1) 进程运行完毕
(2) 进程提出I/O请求；
(3) 进程执行某种原语操作(如P操作)导致进程阻塞；
(4) 时间片已满；
(5) 可剥夺方式中，就绪队列中某进程的优先级变得高于现行进程；，系统不得以任何理由剥夺该现行进程的处理机。
-the operating system, due process than the total number of processor, and they will compete processor. Process scheduling function is to a certain strategy, Dynamic processor allocation of land to put in place a cohort of the implementation process of making it. According to various system design objectives, can have a wide choice of a process strategy. There are two basic process scheduling, that is deprived of means (preemptive mode) and non-denial mode (non-preempti 've mode). The former refers to ready queue once they have priority over the current process priority class process, the system will immediately processors allocated to high-priority process. Of course, the processors are deprived of the process of the state and context must be properly preserved for future restoration.
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Size: 235735 |
Author: 李明 |
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Description: 这是一个AD按键的实现方法，里面详细的分析了电阻的取值与程序的编写方法。这对于有AD模块而又I/O紧张的场合，实为一良好的解决方案。
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Size: 20188 |
Author: 陈炜明 |
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Description: ucos在blackfin533上的移植。用ADI的visual dsp++ 编译。如果编译不能通过，请将*.ldf删除，让系统自动生成ldf文件。-CENTER blackfin533 in the transplant. Using ADI's visual DSP compiler. If you compile passed, I would be grateful if*. ldf deleted, so that the system automatically generate ldf document.
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Size: 119808 |
Author: 张远文 |
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Description: 我自己编写的用Delphi编写的Ad Hoc无线网络仿真实验-I prepared with Delphi's Ad Hoc Wireless Network Simulation
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Size: 248832 |
Author: 许超雄 |
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Description: 本压缩包包含1602液晶显示，键盘显示，AD转换，非常好的电子种程序，都是我发了好多时间收集的！-contains the compressed 1602 LCD, keyboard, the AD converter, very good kinds of electronic procedures that I made a lot of time to collect!
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Size: 14336 |
Author: 帅冲 |
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Description: 基于凌阳单片处理器的ad转换。能够作为数字仪表的参考代码。本人原创。-based on single-chip processor Sunplus ad conversion. Digital Instrumentation to the reference code. I originality.
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Size: 20480 |
Author: 周东文 |
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Description: TMS320C54X DSP 实验指导程序
实验一 常用指令实验
实验二 数据存储实验
实验三 I/O实验
实验四 定时器实验
实验五 INT2中断实验
实验六 A/D转换实验
实验七 D/A转换实验
实验八 AD/DA综合实验
-TMS320C54X DSP experimental procedures to guide an experimental common directive experimental experimental data storage is 2 three experimental testing of I/O The Experiment The Experiment 4 timer interruption five INT2 The Experiment 6 A/D converter The Experiment 7 D/A conversion The Experiment 8 AD/DA Experiment
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Size: 246784 |
Author: |
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Description: ad0831模数转换必须，很哟用的，我也是找了好久哦，大家一起分享把！-ad0831 analog-digital conversion necessary, the very yo, I was looking for a long time, oh, we put together to share!
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Size: 1024 |
Author: 乔芳 |
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Description: wince 绝好的资料，涉及到多进程，通讯，很全的，嵌入式爱好者千万不要错过！-wince excellent information that involves many processes, communication, I am all the Embedded lovers should not miss!
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Size: 7308288 |
Author: ocean |
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Description: AD转换器TLC3544在Linux2.6内核中的驱动程序
本人已经调试过 可以成功运行-AD converters TLC3544 in the Linux kernel driver than I have Debugging successful operation
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Size: 17408 |
Author: 华金 |
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Description: TI德州仪器高性能模拟数字混合处理器msc1211的程序，主要侧重于其内部高精度24位ad以及串口通信，这个是我做的一个项目上用的-TI Texas Instruments high-performance analog-to-digital mix processor msc1211 procedures, mainly focused its internal high-precision 24 ad and serial communication, this is what I am doing an item on the
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Size: 14336 |
Author: fdy |
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Description: 2407的经典ad程序，有详细的代码，给所有人下载，人人为我，我为-2407 classic ad procedures, has a detailed code, for all the download, people person, I for
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Size: 2048 |
Author: 倪化生 |
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Description: ad_da的pdf有学多种,我比较菜没什么好东西上传-ad_da school has a variety of pdf, I am not a good thing From vegetables
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Size: 4779008 |
Author: kblost |
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Description: ad公司的dsp50x系列的部分程序，希望大家参考多提意见-ad company dsp50x Series Part of the procedure, I hope everyone refer to their views
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Size: 43008 |
Author: tianxiyu |
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Description: 以LPC2194为平台开发的整车ECU控制器程序，集成SPI，Can通讯，AD，I/O控制等功能。具有产品级的性能。-LPC2194 as a platform to develop procedures for the vehicle ECU controller, integrated SPI, Can communication, AD, I/O control functions. With product-level performance.
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Size: 281600 |
Author: bb |
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Description: 5509A的AD口测试程序，已经调通，希望对大家的学习有帮助，欢迎大家下载，分享知识，分享快乐。-5509A mouth of the AD test procedures have been adjusted pass, I hope everyone' s learning to help welcome you to download, share knowledge, to share their happiness.
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Size: 29696 |
Author: zhongmingsen |
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Description: 用PIC16f877实现ad转换，步骤清晰明了，希望可以帮到大家。-Ad with the realization of PIC16f877 conversion, steps to clear, I hope you can help.
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Size: 2048 |
Author: 冷 |
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Description: 自己编写的基于dsp2812的spwm程序，程序能实现软启动，从10hz到50hz，经过RC滤波后能出平滑的正弦波。-I have written programs based dsp2812 of spwm, the program can achieve soft-start, from 10hz to 50hz, filtered through the RC can be a smooth sine wave.
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Size: 260096 |
Author: 邝国民 |
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Description: AVR,ATmega128之AD转换，入口参数使用8个AD输入，并有平均值滤波函数。方便移植。使用ICC开发环境。-AVR, ATmega128 of the AD conversion, the entrance parameters using the 8 AD inputs, and a mean filter function. Facilitate the migration. The use of ICC development environment.
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Size: 27648 |
Author: 肖志勇 |
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Description: stm32中，AD串口传送程序源码，希望有所帮助(AD serial transmission program source code,which I hope to help you.)
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Size: 2515968 |
Author: zzzz12
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