液晶显示屏论文摘要

问：工科论文题目和摘要翻译（中翻英）

1. 答：下面的都是上google网上在线翻译的，不准确，你需要对下面的答案修改一下！
2. 答：&frac12

问：求助论文摘要的英文翻译，很急啊不要在线翻译

1. 答：Based on the traditional principle of measuring the frequency of the frequency of measurement accuracy will be tested with the frequency and reduce the decline in the more practical limitations, such as accuracy and frequency of not only has high accuracy, but in the frequency region To maintain a constant test accuracy. - Frequency signals strong anti-interference capabilities, easy to transport, receive higher accuracy, frequency of measurement method of increasing attention. The design is based on AT89S51 SCM, and other precision frequency. Input signal for the peak of the peak 5 v sine signal, the frequency range 10 HZ ~ 100MHZ, frequency measurement accuracy of 0.1 percent. By 1602 LCD display results.
   只供参考

问：各位大侠，我现在正在做大四毕业设计，课题是 基于单片机的led彩色显示屏，要求必须做出硬件!!

1. 答：这个网址你可以看下，可以先用Proteus仿真一下看效果。
   关于制作16*16二极管显示点阵元件,
   16*16=256个LED
   一个双层板（焊这256个LED）
   【当然，可以买现成的8*8的点阵代替自己手动焊点阵，然后拼在一起，这样减少很多工作】
   一个74LS154（4线16线译码器）
   2个74LS373（驱动LED的行或列）
   一个单片机，入门的就用AT89S52吧。
   再就是单片机最小系统中的分立元件这些。就够了