his little function rounds a number (or the elements of a vector ot matrix) towards the nearest number with N significant digits. Examples: roundsd(0.012345,3) returns 0.0123 roundsd(12345,2) returns 12000 This is a useful complement to Matlab s ROUND, ROUND10 and ROUNDN (Mapping toolbox), especially when dealing with data with a large variety of order of magnitudes. I was about to upload this file when I found "sd_round.m" by Edward Zechmann (see aknowledgment), which has similar feature (and more). But, because my script is very different in coding (much much shorter), I decided to share it anyway.

advanced Serial port with verilog

教学网络打字软件，保证好用！专用网络打字比赛软件6.2.0（55用户注册终结版）

这是一个用matlab编写的arma时序模型信号处理程序，可以用于振动信号等方面的信号处理或仿真-This is a matlab prepared using time series model arma signal processing procedures, can be used in areas such as vibration signal or the signal processing simulation

将短消息放入到收件箱-Add to the Short Message Inbox

轨迹跟踪程序例子-example

俄罗斯方块：只有一般功能，方便学习。如果想玩，还得自己加点东西哦！-Tetris: Only a general function to facilitate learning. If you want to play, had to add something to their Oh!

各种窗函数设计得到的低通滤波器的幅度频率特性-Design a variety of window function in the range of low-pass filter frequency characteristics

使用VB开发的在MAPX中绘制移动基站扇区的代码-The use of VB in the development of mobile base stations MAPX Drawing sector code

移动硬盘盒的电路图,包括原理图和PCB。-Mobile hard disk box of circuitry, including schematic and PCB.