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6
说明： 4位数码扫描显示电路,我们控制一个七段LED需要8个输出端口；如果要输出四位十进制数，就需要32的输出端口，这将占用大量的端口资源。采用串行扫描显示，我们只需要8+4共12个端口即可。其原理是：用一个四位的输出端控制，某一时刻只选中其中的一个LED（输出为‘1’表示选中），八位的输出端将该LED所需要显示的值输出；然后四位的输出端值改变，选中下一个LED。这样依次类推。如果选择的频率很快，达到50Hz以上，由于人眼的视觉暂留效应，看起来就像4个LED同时显示。
设计一个程序，输入四个一位十进制数，用4个LED显示出来。CLK采用频率可调信号发生器，逐渐改变频率，观察扫描频率的改变对输出效果的影响。
输入：连续脉冲，逻辑开关；输出：七段LED。
(4 digital scanning display circuit, we need to control a seven-segment LED output port 8 If you want to output four decimal numbers, you need the output port 32, which will take up a lot of ports. Serial scans showed, we need only 8 of 12 ports can be+4. The principle is: the output of four with a control, a time to select only one LED (output 1 is selected), 8 output of the LED by the need to show the value of the output then The output value of the four changes, select the next LED. This and so on. If you select the frequency rapidly, reaching more than 50Hz, as the human eye s persistence of vision effect, looks like a 4 LED display simultaneously.
Design a program, enter a decimal number four, with four LED display. CLK signal generator with adjustable frequency, gradually changing the frequency of observed changes in scan frequency effect on the output.
Input: Continuous pulse, logic switches output: seven-segment LED.)
- 2010-06-21 22:07:59下载
- 积分：1
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Actel8051Core
Actel 8051 Verilog core
- 2020-06-27 03:00:02下载
- 积分：1
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cycle_measure
测量周期,此程序已经在EP2C板子上成功实现(mesure cycle)
- 2013-08-29 16:09:17下载
- 积分：1
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Frequency-measurement
频率计，测量频率。可测范围为100HZ至60khz.测量比较稳定。基于MSPg2553(Frequency meter, measuring frequency. Measurable range 100HZ to 60khz. Stable measurement)
- 2012-08-22 11:59:22下载
- 积分：1
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基于Xilinx FPGA的OFDM通信系统基带设计
说明： 使用ISE软件实现OFDM通信系统的框架搭建，完成上板前的仿真工作(Realization of OFDM communication system with ISE software)
- 2019-03-28 10:21:02下载
- 积分：1
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人脸识别（3D）
基于高清视频的3D人脸识别源代码，四万多行，经过FPGA实际验证，最近调试完毕。(The source code of 3D face recognition based on HD video, more than 40,000 lines, has been verified by the actual FPGA, and has been debugged recently.)
- 2019-07-01 16:22:46下载
- 积分：1
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EDAandVHDL
EDA技术与VHDL课件，利用EDA技术进行电子系统设计(EDA technology and VHDL courseware, the use of EDA technology for electronic system design)
- 2009-03-04 15:34:53下载
- 积分：1
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FPGA串口调试程序
用xilinx ISE软件实现串口调试的程序其中，包含FIFO的一个IP核用于缓存数据
- 2022-03-10 12:40:48下载
- 积分：1
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encoder_Z64_all_rate
Wimax矩阵的LDPC编码器，已通过modelsim仿真测试，并前在altera的FPGA板上通过测试,码率5/6，可进入代码内部修改参数，支持2/3,3/4其他2个码率，数据吞吐量为700M(Wimax based LDPC encoder, modelsim simulation passed, also passed on altera FPGA board, code rate 5/6, also support 2/3,3/4, throughout 700m)
- 2012-03-19 09:44:32下载
- 积分：1
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QPSK
用Verilog语言实现QPSK调制，QPSK是一种数字调制方式。它分为绝对相移和相对相移两种。
(Verilog language using QPSK modulation, QPSK is a digital modulation. It is divided into absolute and relative phase shift of the phase shift of two.)
- 2011-01-24 17:46:44下载
- 积分：1
