本文用VHDL在CPLD器件上实现一种8 b数字频率计测频系统，能够用十进制数码显示被测信号的频率，不仅能够测量正弦波、方波和三角波等信号的频率，而且还能对其他多种物理量进行测量。具有体积小、可靠性高、功耗低的特点。
上传时间： 2013-12-18
上传用户：sy_jiadeyi
一个电子产品开发时的部分c代码B!绝对能用!
上传时间： 2013-12-20
上传用户：许小华
一个电子产品开发时的部分c代码B!绝对能用!
上传时间： 2016-09-05
上传用户：515414293
自己的51开发板源代码B，里面包含有LCD1602实验，lcd12864实验，ps2 lcd1602，串口通讯，红外遥控，计算器，继电器控制，矩阵键盘等实验程序，内容丰富
上传时间： 2016-09-06
上传用户：wab1981
flash 键盘音效取自win2000系统ding.wav，经过CoolEdit处理成音阶，在Flash中导入在相应按钮上。 没有难度，就是耐心一点，成绩不错哦！ 对应表： 低音G-a #G-w A-s #A-e B-d 中音C-f #C-t D-g #D-y E-h F-j #F-i G-k #G-o A-l #A-p B- 高音C-1 D-2 E-3 F-4 G-5 A-6 B-7 C(high)-8 #C-c #D-v #F-b #G-n #A-m
上传时间： 2014-02-06
上传用户：ljmwh2000
The toolbox solves a variety of approximate modeling problems for linear static models. The model can be parameterized in kernel, image, or input/output form and the approximation criterion, called misfit, is a weighted norm between the given data and data that is consistent with the model. There are three main classes of functions in the toolbox: transformation functions, misfit computation functions, and approximation functions. The approximation functions derive an approximate model from data, the misfit computation functions are used for validation and comparison of models, and the transformation functions are used for deriving one model representation from another. KEYWORDS: Total least squares, generalized total least squares, software implementation.
标签： approximate The modeling problems
上传时间： 2013-12-20
上传用户：15071087253
W.B.Gragg改进的解微分方程组的解法，为改进中点法，并给出解一个方程组得例子。
上传时间： 2016-09-20
上传用户：wangdean1101
Matsig is an object-oriented signal class library for MATLAB 6.5 and later. It implements a signal class, simplifying operations and manipulations common in audio signal processing and speech processing
标签： signal object-oriented implements library
上传时间： 2014-12-21
上传用户：lunshaomo
This a simple database management system. It doesn t use any other code (i.e. ODBC, ADO, etc.) and has it s own database file format. I wrote it because I found the other DBMSs code too bulky and hard to debug. It s designed for small applications and I doubt it could handle anything on a large scale. A sample program included in the .zip shows how everything works. The database project is a library project, so you ll have to compile and link with the .lib file to get everything working. Pros: - You have the source code so you know exactly what it is doing - Database files are very small - Small and fast code Cons: - Can t handle large amounts of records (more than 65000ish) - Doesn t support SQL (you have to search the database by cycling through the records and testing them against your constraints) - Each database file can only have one table.
标签： i.e. management database simple
上传时间： 2016-10-02
上传用户：851197153
基于换乘次数优先的公交路线选择模型 2007年B题论文
上传时间： 2016-10-03
上传用户：weixiao99
