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主要介绍了等精度频率测量原理，该原理具有在整个测试频段内保持高精度频率
测量的优点 同时在该原理基础上，采用了Verilog HDL语言设计了高速的等精度测...
主要介绍了等精度频率测量原理，该原理具有在整个测试频段内保持高精度频率
测量的优点 同时在该原理基础上，采用了Verilog HDL语言设计了高速的等精度测频
模块，并且利用EDA开发平台QUARTUS11 3 .0对CPLD芯片进行写人，实现了计数等
主要逻辑功能 还使用C语言设计了该等精度频率计的主控程序以提高测量精度。本设
计实现了对频率变化范围较大的信号进行频率测量，能够满足高速度、高精度的测频要
求。-Introduced, such as the accuracy of frequency measurement principle, the principle has in the entire test frequency to maintain the advantages of high precision frequency measurement at the same time the basis of the principle of using the Verilog HDL language, such as the design of a high-speed precision frequency measurement module, and use of EDA Development platform QUARTUS11 3 .0 on CPLD chip to write, and achieved a count of the main logic function, such as the use of C language is also designed such precision the frequency of control procedures to enhance measurement accuracy. This design achieved a wide range of frequency changes in signal frequency measurement, to meet the high-speed, high precision frequency measurement requirements.
- 2023-08-06 16:05:04下载
- 积分：1
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一款很好的码流分析软件，ts流的所有信息都可以分析出来，还可以根据需要查看相对应的包...
一款很好的码流分析软件，ts流的所有信息都可以分析出来，还可以根据需要查看相对应的包-A very good stream analysis software, ts streams can be analyzed all the information out, but also can be required to view the corresponding packet
- 2023-08-26 05:45:03下载
- 积分：1
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seed
seed-xdsusb驱动程序，适用CCS3.3-seed-xdsusb driver, the application of CCS3.3
- 2022-02-02 03:24:14下载
- 积分：1
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a small procedure, the right button to transform very good use, and try your inf...
一个小程序，对按钮进行的变换
挺好用的，试一试，大家参考参考-a small procedure, the right button to transform very good use, and try your information.
- 2022-03-05 23:07:14下载
- 积分：1
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赛马游戏
vs.net
需要LUABind
赛马游戏
vs.net
需要LUABind-horse racing game vs.net need LUABind
- 2023-01-13 01:05:03下载
- 积分：1
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a simple XML util for managing documents and files in XML format
a simple XML util for managing documents and files in XML format
- 2022-06-12 22:38:12下载
- 积分：1
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pb开发的库存管理系统
pb开发的库存管理系统-pb development of the inventory management system
- 2023-08-15 17:10:06下载
- 积分：1
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Snooker games C code, this can be useful in the DOS interface to operate the mou...
桌球游戏C代码，这是可以在DOS界面下实用鼠标操作的版本，内含能够将鼠标驱动引入代码的mouse.h头文件。-Snooker games C code, this can be useful in the DOS interface to operate the mouse version, containing the mouse driver to the introduction of code mouse.h header files.
- 2022-03-29 10:50:29下载
- 积分：1
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发射部分采用锁相环式频率合成器技术， MC145152和MC12022芯片组成锁相环，将载波频率精确锁定在35MHz，输出载波的稳定度达到4×10...
发射部分采用锁相环式频率合成器技术， MC145152和MC12022芯片组成锁相环，将载波频率精确锁定在35MHz，输出载波的稳定度达到4×10-5，准确度达到3×10-5，由变容二极管V149和集成压控振荡器芯片MC1648实现对载波的调频调制；末级功放选用三极管2SC1970，使其工作在丙类放大状态，提高了放大器的效率，输出功率达到设计要求。-Part of the launch phase-locked loop frequency synthesizer using technology, MC145152 and MC12022 PLL chips to lock in the exact carrier frequency 35MHz, the output carrier to achieve the stability of 4 × 10-5, reaching the accuracy of 3 × 10-5 by the varactor diode V149 and integration to achieve MC1648 chip VCO FM modulation on the carrier selection transistor amplifier at the end of class 2SC1970, to work in the C state to enlarge and improve the efficiency of the amplifier output power to meet the design requirements.
- 2022-08-18 16:37:11下载
- 积分：1
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LCD Driver 51 MCU
tft320x240液晶显示驱动
并行接口
51单片机驱动程序-LCD Driver 51 MCU
- 2022-01-22 01:26:50下载
- 积分：1
