Description: 一种用N+1个IO口实现的N×N矩阵式键盘
摘要 介绍一种用N+1个I/O端口实现N×N矩阵式键盘的一般方法，并用该方法设计一个5×5的矩阵式键盘作为例子，给出软件编制框图并对该方法进行探讨。
关键词 键盘 矩阵 接口电路
-A N+ 1 months IO I realize the N × N matrix A keyboard Abstract Introduction N+ 1 months I/O ports realize N × N matrix of the general approach the keyboard and used the method to design a 5 × 5 s Matrix keyboard as an example, given the preparation of block diagram software and to explore the method. Key words keyboard matrix interface circuit Platform: |
Size: 49152 |
Author:丝 |
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Description: 最近买了块开发板学习单片机，以下是电路原理图。不明白上面的4×4矩阵键盘(电路图最左上角）的编码原理。键盘的8条引线直接与p1.0^p1.7相连，疑惑的是即使按下任意按键也在p1口上读不到任何电平啊？
期待高手指点！-Recently bought a development board to study single-chip block, the following is the circuit schematic. Do not understand the above 4 × 4 matrix keyboard (circuit diagram most upper-left corner) encoding principle. 8-lead keyboard directly connected with the p1.0 ^ p1.7, doubts that even if the press any key I have also read p1 level no ah? Look forward to expert advice! Platform: |
Size: 944128 |
Author:侯桂友 |
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Description: 矩阵键盘的数码管显示
使用工具为 keil 和 proteus
内含有完整源代码和电路图-Digital keyboard matrix display
Keil the use of tools and proteus
Contains the full source code and circuit diagram Platform: |
Size: 51200 |
Author:深空 |
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Description: 139个单片机源代码程序和仿真图（DSN），用proteus仿真，学习单片机绝佳的程序。例如：《lcd1602仿真实例》、2io5键盘模拟音量数码管显示、4线步进电机控制、8通道自动温度检测系统仿真（含原程序）、32X16LED汉字点阵显示屏(atmega16)、32x16汉字、DS18B20仿真实例、PWM电机正反转、PWM调温、SPI演示文件两个595对接、ULN2803、播放音乐、代码大全中文版[1]、单片机控制的电动自行车驱动系统、单片机实验29个、俄罗斯方块、刚做好的十个字的led屏模拟有程序、搞得一个温湿度传感器电路、混合电压系统设计、基于PROTEUS的推箱子游戏、流水灯-139 microcontroller source code program and simulation diagram (DSN), with proteus simulation, learning microcontroller excellent program. For example: "lcd1602 simulation of real-
Cases ", 2io5 keyboard analog volume digital tube display, 4 wire stepper motor control, 8-channel automatic temperature detection system simulation (including the original program),
32X16LED character dot-matrix display (atmega16), 32x16 characters, DS18B20 simulation example, PWM motor positive inversion, PWM thermostat, SPI presentation files
2 595 docking, ULN2803, music, code complete Chinese version [1], microcontroller-controlled electric bicycle drive system, single-chip experiment 29
Months, the Russian box, just do a good job in 10 words led screen simulation of process gets to a temperature and humidity sensor circuit, mixed-voltage system design, based on the
PROTEUS the Sokoban game, water lights ... ... Platform: |
Size: 21815296 |
Author:tong |
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Description: 51单片机的矩阵键盘，内含两个电路图，一个是控制16个LED，一个是控制数码管，需要用到Proteus 7 Professional画原理图，适合单片机初学者研究电路。-51 SCM matrix keyboard, containing two circuit diagram, is a control 16 LED, is a digital control tube, need to use Proteus 7 Professional painting principle diagram, and suitable for the single chip microcomputer beginners research circuit.
Platform: |
Size: 103424 |
Author:高洪波 |
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Search - matrix keyboard circuit diagram