we do Interface Technology Experiment 8255, on the need to download it

lab2000系统下的电子时钟，完整版的哦-lab2000 system of electronic clock, full version of oh

在字符LCD上显示中文字，采用汇编语言。并且在PROTES上运行通过-In the character LCD display Chinese characters, using assembly language. And in PROTES run through the

msp430f133对24c01的读写，可以修改读写字节长度，对其他eeprom进行读写-msp430f133 of 24c01 reading and writing, can be modified to read and write byte length, read and write to other EEPROM

这是一个汇编代码简单修改的工具，还算是蛮经典的一个。-This is a simple modification of the tool assembly code, is actually quite pretty classic one.

做串口通信实验时所用的编码程序，希望对你们有用-Experiments done by the serial communication code used in the procedure, I hope useful to you

msp430的413单片机AD充放电程序-MSP430 Singlechip AD of 413 charge-discharge process

8259A中断控制器实验 253A的计数器0为工作方式0，装入时间常数FFFFH，结束中断时显示信息：8253A INTERRUPT EXPERIMENT！-8259A interrupt controller experimental 253A of counter 0 0 way to work, the time constant FFFFH loaded to end disruption to display information : 8253A INTERRUPT EXPERIMENT!

C51 LCD Keyboard driver

计时程序,对8253进行分频,使用二个计数器,使第二个计数器的OUT作为中断源,送到8259产生中断,在LED上显示时间-time procedures for the 8,253-frequency, the use of two counters, so that a second counter OUT interrupted as a source to have interrupted 8259, the time shown on the LED

伟福LAB2000单片机仿真系统直流电机控制:利用实验仪上的D/A变换电路，输出-8V至+8V电压，控制直流电机。改变输出电.压值，改变电机转速，用8255 的PB.0 读回脉冲计数，计算电机转速。在电压允许范围内，直流电机的转速随着电压的升高而加快，若加上的电压为负电压，则电机会反向旋转。本实验仪的D/A变换可输出-8V到+8V的电压，将电压经驱动后加在直流电机上，使其运转。通过单片机输出数据到D/A变换电路，控制电压的高低和正负，观察电机的旋转情况。 在电机转盘上安装一个小磁芯，用霍尔元件感应电机转速，用单片机控制8255读回感应脉冲，从而测算出电机的转速。 -err