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水电管理信息系统设计书
水电管理信息系统设计书-utilities management information system design book
- 2023-03-10 22:30:03下载
- 积分：1
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使用智能天线的自组网链路建立
Link Establishment in Ad Hoc Networks Using Smart Antennas-Opnet_thesis
- 2023-01-26 20:35:03下载
- 积分：1
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Our software interface, the need to connect to the server to use, service client...
我公司软件的界面，需要连接到服务端才能使用，服务端可以自己配置，-Our software interface, the need to connect to the server to use, service client can configure,
- 2022-01-31 00:00:27下载
- 积分：1
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err
一个完整的MP3设计方案，包括原理图和PCB，对这方面有兴趣的可以-err
- 2022-01-25 15:10:05下载
- 积分：1
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华为的ATM技术的系统设计电子文档,内容非常详细,中文版本!`
华为的ATM技术的系统设计电子文档,内容非常详细,中文版本!`-Huawei"s ATM system design electronic documents, the content is very detailed, the Chinese version!
- 2022-07-19 13:30:03下载
- 积分：1
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DVB DOCUMENT A025 Guideline for Implementation and Use
of the Common Interface...
DVB DOCUMENT A025 Guideline for Implementation and Use
of the Common Interface for DVB
Decoder Applications-DVB DOCUMENT A025 Guideline for Implement ation and Use of the DVB Common Interface for Dec oder Applications
- 2022-04-23 22:02:20下载
- 积分：1
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hardware implementation of bluetooth security using safer+ algorithm
hardware implementation of bluetooth security using safer+ algorithm
- 2022-07-09 23:02:59下载
- 积分：1
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在数控机床中, 通常用可编程控制器( PLC) 对机床开关量信号进行控制。PLC可靠性高, 使用方便。但在大多数数控机床, 特别是经济型数控机床中, 要求的输入...
在数控机床中, 通常用可编程控制器( PLC) 对机床开关量信号进行控制。PLC可靠性高, 使用方便。但在大多数数控机床, 特别是经济型数控机床中, 要求的输入输出点数并不多, 通常在60点以下,因此, 为了降低数控机床成本, 在基于工业PC机的数控系统中, 可以采用开关量I/O板加外接继电器,配合主机的软件对机床开关进行控制。但如果PC机采用单任务操作系统(如DOS) , 数控系统的所有任务运行都置于一个总体的消息循环中, 软件的模块化和可维护性较差, 系统故障的风险相对集中, 而且不能充分利用PC机系统资源。而采用非实时多任务操作系统(如Windows) 时, Win32 API的设计没有考虑到实时环境的开发用途, 其系统调用的效率不高,不能满足数控系统PLC控制的实时性要求。
为此, 本文提出一种基于RT - Linux操作系统的嵌入式PLC, 利用RT - Linux的开放性、模块化和可扩展性的系统结构特性和多线程/多任务的系统环境,在保证实时性的同时, 使故障风险相对分散。
-use linux to design plc
- 2022-02-03 18:12:02下载
- 积分：1
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ant algorithm based on time
基于蚂蚁算法的学校排课系统,是找到的一篇蚂蚁算法应用的论文-ant algorithm based on time-school system, is to find the ant algorithm is applied to a paper
- 2022-04-13 11:42:30下载
- 积分：1
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ST7787 chip SPEC, BYD 2.4inchLCM the SPEC. The ST7787 is a single
ST7787 芯片的SPEC，比亚迪2.4inchLCM的SPEC。The ST7787 is a single-chip controller/driver for 262K-color, graphic type TFT-LCD. It consists of 720 source line and
320 gate line driving circuits. This chip is capable of connecting directly to an external microprocessor, and accepts Serial
Peripheral Interface (SPI), 8-bits/9-bits/16-bits/18-bits parallel interface. Display data can be stored in the on-chip display
data RAM of 240x320x18 bits. It can perform display data RAM read/write operation with no external operation clock to
minimize power consumption. In addition, because of the integrated power supply circuits necessary to drive liquid crystal,
it is possible to make a display system with the fewest components.-ST7787 chip SPEC, BYD 2.4inchLCM the SPEC. The ST7787 is a single-chip controller/driver for 262K-color, graphic type TFT-LCD. It consists of 720 source line and320 gate line driving circuits. This chip is capable of connecting directly to an external microprocessor, and a
- 2022-10-20 09:30:03下载
- 积分：1
