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Description: 基于80x86CPU为核心控制器的具备基本I/O接口功能的硬件电路系统原理图设计、PCB电路设计和软件编程设计。基本I/O接口电路包括：锁存器、缓冲器、地址译码器、8255接口、8253接口、A/D（D/A）转换电路、串行接口电路等；软件功能要求完成基本I/O接口电路控制和串口通信功能调试。-Based on 80x86CPU as the core controller with the basic I/O interface function of the hardware circuit system schematic design, PCB circuit design and software programming. The basic I/O interface circuit includes: latch, buffer, address decoder, 8255 interface, 8253 interface, A/D (D/A) conversion circuit, serial interface circuit, etc . software function requirements to complete the basic I/O interface circuit control and serial communication function debugging.
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Size: 558080 |
Author: 杨易 |
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Description: 8253 通道 0 工作在方式 0（脉冲计数产生中断），由按键产生单脉冲接入 CLK0、令计数初值为 0FH，
手动逐个输入单脉冲，编程在计算机屏幕上显示计数值，并用逻辑笔观察 OUT0 的状态，键盘有键按下时
返回 DOS。-8253 channel 0 0 work in way (pulse counting the interrupt), single pulse generated by the key access CLK0, counting the initial value of 0 fh,
Manually enter them one by one single pulse, programming on a computer screen display count value, using logical pen observation OUT0 state, the keyboard has a key press
Returns the DOS.
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Size: 2048 |
Author: 冯斌 |
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Description: 通过8253和8255两个芯片来测试频率，最后测出来的频率误差在１hz到2hz之间，详细情况请见源代码。(Through 8253 and 8255, two chips to test the frequency, and finally measured frequency error between 1Hz to 2Hz, in detail, see the source code.)
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Size: 26222592 |
Author: 夜如此冷
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Description: 汽车信号灯控制系统 单片机实现摘要：随着汽车制造技术及电光源技术的发展而逐步完善的。它经历了机油（或煤油）灯、乙炔气灯到电光源灯的发展历程。现代汽车信号灯灯具已经开始使用发光二极管（LED）技术以及光导技术，这是信号灯灯具的一次飞跃。现在我们就是利用微机原理的知识用8088，8255，8253等几种芯片来控制汽车的信号灯。(A summary of the realization of the single chip microcomputer for the control system of the automobile signal lamp: with the development of the automobile manufacturing technology and the electric light source technology, it is gradually perfected. It has experienced the development of oil (or kerosene) lamp, acetylene lamp and light source lamp. Modern automotive light lamps have begun to use LED technology and optical technology, which is a leap in the light lamps. Now we use the knowledge of the principle of microcomputer to use 808882558253 kinds of chips to control the signal lights of the car.)
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Size: 43008 |
Author: staub
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Description: 8086交通灯，用8255控制动态显示数码管来作为红绿灯的秒数，用8253作为计数器(8086 traffic lights, using 8255 control to dynamically display the digital tube as the number of seconds of the red and green light, and use 8253 as a counter)
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Size: 27648 |
Author: lllll。。
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Description: 这是按单片机（Microcontrollers）是否提供并行总线来区分的。总线型单片机普遍设置有并行地址总线、 数据总线、控制总线，这些引脚用以扩展并行外围器件都可通过串行口与单片机连接，另外，许多单片机已把所需要的外围器件及外设接口集成一片内，因此在许多情况下可以不要并行扩展总线，大大减省封装成本和芯片体积，这类单片机称为非总线型单片机。(This is based on whether a single chip computer (Microcontrollers) provides a parallel bus. The bus is provided with MCU general parallel address bus, data bus and control bus, these pins for extended parallel peripheral devices can be connected with the microcontroller through the serial port, in addition, many SCM has to the needs of the peripheral device and a peripheral interface integrated on-chip, so in many cases can not parallel expansion bus greatly reduce the packaging cost and chip size, this kind of chip called non bus mcu.)
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Size: 23552 |
Author: 叶青666 |
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Description: 利用定时器 8253 和外扩展的键盘—显示模块，实现时钟显示及时间设置功能：
1）时钟显示内容为“分：秒”，即“MM.SS”； 2）P 键用来启动时钟设置，通过键盘上的数字修改时间，参数在修改过程中 处于闪烁状态，闪烁频率 2Hz(Using timer 8253 and extended keyboard display module to realize clock display and time setting function:
1) the clock display content is "minute: second", "MM.SS"; 2) P key is used to start the clock setting. Through the digital modification time on the keyboard, the parameters are in the flicker state during the modification process and the scintillation frequency 2Hz)
Platform: |
Size: 27648 |
Author: 张兰 |
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Description: 利用ADC0809采集电位器的电压值，将采集的电压值通过8255显示在七段数码管上，显示数据保留小数点后2位，利用8253定时数据更新，每隔0.5秒数据更新一次。扩展要求：具有设置报警阈值功能，当超过阈值时，点亮一个LED灯。(Using ADC0809 to collect the voltage value of potentiometer, the collected voltage value is displayed on seven digital tubes through 8255. The display data is kept at two decimal points and updated with 8253 timing data every 0.5 seconds. Expansion requirements: With the function of setting alarm threshold, when exceeding the threshold, light an LED lamp.)
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Size: 3111936 |
Author: xxx.xx |
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Description: 1、8255 芯片初始化 (1) 分析原理图，计算 8255 芯片和 8253 芯片在 IO 空间中各内部寄存器的端口地址，修改 Demo 程序（main.asm 和 INTDemo.asm）中 IO 空间地址的符号定义（xxH）。 (2) 分析原理图中 8255 芯片 PA、PB 和 PC 口的信号传输方向确定各端口的输入及输出状 态，填充源代码框架中 8255 芯片初始化子程序 INIT8255，完成 8255 芯片初始化代码。 (3) 分析原理图中 PC 口的电路功能，完成对 PC 口各信号线的控制。填充源代码框架中 AccessPC 子程序，实现对 PC 口 PC0 的开关信号量查询，并将其值输出到 PC 口的 PC6 引脚，C 口其他引脚的值不可改变（注 2）。 (4) 填充源代码框架中 DISPLAY8255 子程序，将 PC6 引脚的状态（0 或 1）显示在第 1 个 数码管上。(1. Learn how to use the programmable timer/counter interface chip 8253 to master the basic components and functions of the 8253, the control word format, the address assignment of each register, and the characteristics of the six operating modes (especially mode 0), 2 and 3). Description. 2. Understand the basic concepts of interrupts, the handling of interrupts, and the priority management of interrupts. Master the 8086 system interrupt instructions, interrupt classification, interrupt vector table, interrupt entry address, interrupt handler and interrupt service routine. Proficiency in writing the 8086 interrupt service routine to understand the difference between ISR writes and general subroutine writes)
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Size: 1338368 |
Author: manstein09 |
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Description: 电子琴电路proteus仿真,含汇编源码。(proteus scheme+.asm source code)
Platform: |
Size: 44032 |
Author: lynn_qh |
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