This paper proposes a scheme of 4x3 matrix keyboard based on embedded Linux and S3C2440 CPU.
文章介绍了基于S3C2440 CPU和嵌入式linux操作系统下的4×3矩阵键盘的驱动设计,该设计实现了重复按键和多键齐按功能,测试表明本设计按键响应速度快,性能稳定可靠。
This paper proposes a scheme of matrix keyboard based on embedded Linux.
提出一种基于嵌入式Linux的矩阵键盘实现方案。
Designing 4×4 matrix keyboard controls with single chip AT89C2051,it conveniently realizes 2421 code and so on other coded forms as the procedure partial modifies slightly,and it also may expand the BCD code output in this circuit foundation.
采用单片机AT89C2051为核心设计4×4的矩阵键盘来控制,对程序部分略加改动则可以方便地实现2421码等其他编码形式;并且也可以在此电路基础上扩展BCD编码输出的位数。
This design uses EM78P451 to take the keyboard matrix and the correspondence signal code,launches by the 2FSK modulation way the 27M modulated carrier wave signal;Receives the part then uses MC3361to take the receive module,demodulates the signal after the MA6135 decoding to be able to communicate with computer directly.
该设计采用EM78P451作为键盘矩阵和通信的信号编码,以2FSK调制的方式将27 M调制载波信号发射出去;接收部分采用MC3361作为接收模块,解调信号经MA6135解码后能与计算机直接通信。
Research and Development of Matrix Keyboard Device Driver Based on Embedded Linux
基于嵌入式Linux的矩阵键盘驱动程序研究与开发
The 90 keys of the keyboard must be organized as a 9 by 10 matrix.
键盘的90个键必须组成9×10的矩阵。
Design of Eliminate Bounce and Matrix Keyboard Based on VHDL
基于VHDL的防抖型矩阵式键盘设计
In this article, It is introduced how a global ASCII Keyboard succession character entry speed equivalence matrix, which is relative to the code location, is figured out from more than two million experiment data.
本文从二百多万个实验数据中统计分析出通用小键盘连续击键键位相关速度当量矩阵。
A novel topological index called Y-index was developed based simultaneously on the bond distance and bond adjacent matrices for a molecular.
基于分子的键距矩阵和键联矩阵提出一种新的分子拓扑指数Y.
Keywords: acoustics, muffler, transfer matrix, plane wave.
关键词：声音、消音器、传输矩阵、平面波。
Research on the Key Technology of Large-scale IP Traffic Matrix Estimation
大尺度IP流量矩阵估计关键技术研究
The Study of Dynamic Heterogeneous Virtual Disks Array and Its Pivotal Technologies;
动态异构虚拟盘阵及其关键技术研究
Research on Architecture and I/O Accelerating Strategy in Two-dimensioned Disk Matrix;
二维磁盘矩阵系统结构及I/O加速策略研究
Models of Key Customization Technologies;
MC程度的量化及关键定制技术的矩阵模型
Algorithm Based on Entropy for Finding Critical Traffic Matrices
一种基于信息熵的关键流量矩阵发现算法
The square matrix is called a diagonal matrix.
该方矩阵称为对角矩阵。
The matrix is defined as the reciprocal of A.
该矩阵定义为A之逆矩阵。
An analysis using Jones matrix has bee n performed on readout of the magneto-optic disk dependence of phase shift.
本文运用琼斯矩阵分析了相位延迟对磁光盘读出特性的影响。
The Block Dominant Degree and Disc Theorem on Schur Complements of Block Diagonally Dominant Matrices
块对角占优矩阵Schur补的块对角占优度和圆盘定理
The transition matrix that is also called the environment of Markov chain is a key factor of Markov chain.
影响马氏链的一个关键问题就是转移矩阵,亦称之为马氏链的环境。
Study on Key Techniques of Matrix Converter & Motor Drive Control System;
矩阵变换器及其电机驱动控制系统关键技术研究
A Transfer Matrix Method Based on Bond Graph and its Application to the Modeling of Chain Structured Systems
基于键合图的传递矩阵法及其在链式系统建模中的应用
