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Search - 8255A - List
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单片机-交通灯
DL : 0
本系统就是充分利用了8051和8255芯片的I/O引脚。系统统采用MSC-51系列单片机Intel8051和可编程并行I/O接口芯片8255A为中心器件来设计交通灯控制器,实现了能根据实际车流量通过8031芯片的P1口设置红、绿灯燃亮时间的功能;红绿灯循环点亮,倒计时剩5秒时黄灯闪烁警示(交通灯信号通过PA口输出,显示时间直接通过8255的PC口输出至双位数码管);车辆闯红灯报警;绿灯时间可检测车流量并可通过双位数码管显示。
Date
: 2009-04-28
Size
: 5.28kb
User
:
enlarghe234tb@163.com
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8255控制交通灯
DL : 0
mcs51单片机8255控制交通灯,模拟十字路口交通灯的红绿黄灯的闪烁-mcs51 control traffic lights to simulate the crossroads of the 169 traffic lights flashing yellow light of
Date
: 2025-12-24
Size
: 1kb
User
:
张三
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200505060050419
DL : 0
十字路口交通灯管理现对交通信号灯进行管理,车行道的黄灯闪烁5秒钟后,转为人行横道行人放行1分钟,然后再转为车行道车辆放行3分钟。如此循环重复。 用发光二极管模拟信号灯,8255A实现对信号灯的控制(所用端口自定),8253的计数器2定时向实验系统主片8259A的IRQ7请求中断,以实现3分钟,5秒钟和1分钟的定时。 实验系统8253计数器2的CLK2可接OPCLK,频率为1.19318MHZ,GATE2已接+5V,定时可采用软硬件结合相结合的方式实现。-traffic lights at a crossroads right now management for traffic signal management, the driveway flashing yellow light five seconds later, the pedestrian crossings to release a minute and then released into driveway vehicles for three minutes. So the cycle to repeat. Using light-emitting diode signal simulation, 8255A right signals control (used to set the port), the 8253 regular counter to the two experimental system of the main unit there 8259A interrupt request, to achieve 3 minutes, 5 seconds and one minute timing. Experimental System to the 8253 counter two OPCLK CLK2 access, frequency of 1.19318MHZ, GATE2 has received+5 V, which combines hardware and software regularly use a combination of ways.
Date
: 2025-12-24
Size
: 42kb
User
:
hzl
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8255按键练习
DL : 0
通过8255查询键值,显示不同的数字。k1显示1,K2显示2,K1和K2显示3,如此类推。最多能显示7。-8,255 inquiries through the keys, show different figures. K1 shows a, K2 showed 2, K1 and K2 showed three, and so forth. The most that can be shown 7.
Date
: 2025-12-24
Size
: 13kb
User
:
SKY
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taiyangnengzhinengreshukongzhixitong
DL : 0
本程序是一个太阳能热水器智能控制系统的程序。它以89C52单片机为核心,配合电阻型4档水位传感器、负温度系数NTC热敏电阻温度传感器、8255A扩展键盘和显示器件、驱动电路(电磁阀、电加热、报警)等外围器件, 完成对太阳能热水器容器内的水位、水温测量、显示;时间显示;缺水时自动上水,水溢报警;手动上水、参数设置;定时水温过低智能电加热等功能。 其中本文第一章主要说明了太阳能热水器智能控制系统的研究现状和本课题的主要任务,第二章对系统的整体结构作了简单介绍,第三章重点介绍了水位水温测量电路,第四章介绍了时钟电路,第五章介绍了显示和键盘电路,第六章对其他电路作了介绍,第七章是对水位测量电路的硬件调试。 本系统对于水位传感器、水温传感器的电阻数据的处理均采用独特的RC充放电的方法。它与使用A/D转换器相比,电路简单、制造成本低。特别适用于对水位、水温要求不精确的场合。 如需详细硬件电路与说明文档请与作者联系!-err
Date
: 2025-12-24
Size
: 3kb
User
:
杨志亮
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8255A
DL : 0
单片机并口扩展芯片8255A源码,内服仿真文件和说明文件-Single-chip parallel port expansion 8255A chip source, internal simulation files and documentation
Date
: 2025-12-24
Size
: 738kb
User
:
辛愿
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8255A
DL : 0
89s52+8255a控制一组指示灯循环发光-89s52+8255 a control cycle of a group of light emitting
Date
: 2025-12-24
Size
: 5kb
User
:
涛哥
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18b20
DL : 0
8255A扩展键盘和LED显示,很有用的-8255A to expand the keyboard and LED display, very useful
Date
: 2025-12-24
Size
: 3kb
User
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fjsm
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8255A
DL : 0
8255A输入输出应用(跑马灯LED) 程序较短,但已打应用得很充份-8255A Application
Date
: 2025-12-24
Size
: 1kb
User
:
cxr555
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8255a
DL : 0
一个avr控制8255a的键盘输入加显示的程序,供学者学习。-A keyboard input 8255a avr control procedures plus display for scholars to learn.
Date
: 2025-12-24
Size
: 41kb
User
:
陈叶飞
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mcu-8255A
DL : 0
C语言编程,利用8255A来完成对单片机IO口的扩展。-C language programming, using the 8255A to complete microcontroller IO port expansion.
Date
: 2025-12-24
Size
: 14kb
User
:
侯勇
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8255A-traffic-light
DL : 0
8255A交通灯 8255A交通灯 -Traffic lights traffic lights 8255A 8255A 8255A 8255A traffic lights traffic lights
Date
: 2025-12-24
Size
: 807kb
User
:
akang
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8255A
DL : 0
8255A口使用举例!仅供学习参考与交流!错误之处还忘纠正!不胜感激!-8255A port using the example! Study reference and communication purposes only! The Office also forgot to correct the error! Appreciate it!
Date
: 2025-12-24
Size
: 130kb
User
:
Issac
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8255A
DL : 0
在PROTEUS下进行的并口扩展芯片8355A的仿真成功,并且带有C51程序-PROTEUS carried out in parallel simulation of a successful expansion of the chip 8355A, and with the C51 program
Date
: 2025-12-24
Size
: 68kb
User
:
曾
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51.8255A.doc
DL : 0
51单片机外接8255A做成的交通灯程序及PROTEUS仿真结果(附对应C语言程序)-8255A PROTEUS
Date
: 2025-12-24
Size
: 83kb
User
:
hr
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8255A
DL : 0
行扫描程序法,本程序是利用8255A芯片进行行扫描的程序,其过程为 STEP1: 检查是否有键按下 1)所有行输出‘0’; 2)读列状态,检查是否全‘1’; 若否,则有可能有键按下 3)延时20ms,再读列线,是否全‘1’。 若否,有键按下 STEP2:读键码(行扫描法) 1)行扫描; 逐行输出‘0’ 2)读列状态。 被扫描到得行有键按下,列状态才会改变 STEP3:键分析 1)行值送(AL) 2)列值送(AH) 3)(AX)取反,得键码 STEP4:键处理 1)查表 拿键值与键值表比较,相同则记录下对应的字符码 2)显示字符 -scanning electron microscope
Date
: 2025-12-24
Size
: 1kb
User
:
赵晶晶
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8051-8255A-water-lights
DL : 0
利用8051单片机,8255A芯片,编程实现流水灯。用proteus仿真显示结果。压缩包包含电路原理图和源程序代码。-8051, 8255A chip, programmed water lights. With proteus simulation results are displayed. The package contains the circuit schematic and source code.
Date
: 2025-12-24
Size
: 19kb
User
:
好景宜人
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8255A-drives-LCD1602
DL : 0
8255A扩展驱动LCD1602,文件中带有C51程序,PROTEUS仿真文件,可以进行仿真验证-8255A expansion drive LCD1602, file with C51 procedures, PROTEUS simulation files, simulation
Date
: 2025-12-24
Size
: 110kb
User
:
wangzhongwei
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SCM
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8255A
DL : 0
8255A的Proteus仿真,51单片机开发,很实用的IO拓展实例,包括电路图和代码-8255A of the Proteus simulation, 51 MCU development, very practical examples of IO expansion, including circuit diagrams and code
Date
: 2025-12-24
Size
: 48kb
User
:
彭勃宇
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8255a-extend-of-51
DL : 0
51单片机io口扩展实验,用8255a芯片对51单片机的io口进行扩展,内带有proteus绘制的仿真原理图和keil c源代码,方便大家学习-51 microcontroller io port expansion experiments, 8255a chip microcontroller io port 51 extend inside with proteus simulation schematic drawing and keil c source code, to facilitate learning
Date
: 2025-12-24
Size
: 47kb
User
:
zhangshaoxing
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