The development of a data acquisition card based on USB bus is introduced in this article.It first describes the configuration and principle of this card in the part of hardware design,and then the application program and device driver in the part of software design.Data acquisition program in firmware is also discussed.Finally,this data acquisition card is tested and evaluated in a program developed by Lab Windows CVI,which shows that this car is stable and reliable
标签： development acquisition introduced article
上传时间： 2015-12-07
上传用户：lijianyu172
IPCAM Design document based on TI DaVinci
标签： document DaVinci Design IPCAM
上传时间： 2013-12-26
上传用户：songrui
IEEE 754 Floating point
上传时间： 2015-12-11
上传用户：gtf1207
[推荐]彭光红先生的《小容量单片机系统的C语言程序结构》Point RTOS monolithic integrated circuit real-time operating system Point RTOS monolithic integrated circuit real-time operating system
标签： monolithic integrated real-time operating
上传时间： 2013-12-18
上传用户：rocketrevenge
Point RTOS 主要是一个针对小系统开发而设计的实时操作系统。 目前，Point RTOS 仅提供对51系列及其扩展系统单片机的支持， 针对51内核函数不能重入以及51单片机的内存空间管理方式等因素， RTOS放弃了抢先式内核的调度，而使用了时间片的调度方式，除非任务主动放弃， 否则任务将独占CPU一直运行，因而任务中必须完成对本次操作的时间片设置，即等时间的设置。
上传时间： 2014-12-05
上传用户：athjac
This is the tlc0834 driver, welcome everybody criticism to point out mistakes This is the tlc0834 driver, welcome everybody criticism to point out mistakes
标签： This 0834 criticism everybody
上传时间： 2015-12-14
上传用户：caixiaoxu26
In a preemptive priority based RTOS, priority inversion problem is among the major sources of deadline violations. Priority inheritance protocol is one of the approaches to reduce priority inversion. Unfortunately, RTOS like uC/OS can’t support priority inheritance protocol since it does not allow kernel to have multiple tasks at the same priority. Although it has different ways to avoid priority inversion such as priority ceiling protocol, developers still have some difficulties in programming real time applications with it. In this paper, we redesign the uC/OS kernel to provide the ability to support round robin scheduling and implement priority inheritance semaphore on the modified kernel. As result, we port new kernel with priority inheritance semaphore to evaluation board, and evaluate the execution time of each of the kernel service as well as verify the operations of our implementation.
标签： priority preemptive inversion problem
上传时间： 2015-12-14
上传用户：气温达上千万的
基于DDS的信号发生器的设计与开发 The Design and Development of Function Generator Based on DDS
标签： Development DDS Generator Function
上传时间： 2014-01-03
上传用户：stewart·
一般使用PC Based Controller 都是当作现场设备的一种，也就是要接受 主系统的命令，做一些操作控制。以Modbus 来看属于Slave 的角色，随 时等待接收Modbus Master 的Query Message，然后依据内容做控制，最后 将控制结果以Response Message 回传。本章将以ICP 7524 及ICP 7188E5 等 两种设备分别设计Modbus RTU、ASCII 及Modbus/TCP 的Slave 应用程序， 读者可以将此两种程序的架构再延伸设计至各种实际应用程序。
标签： Controller Based 现场设备
上传时间： 2015-12-16
上传用户：nanxia
A Comparison of Load-based and Queue-based Active Queue Management Algorithms
标签： Queue-based Comparison Algorithms Load-based
上传时间： 2015-12-16
上传用户：ruixue198909
