学习C51时写的定时器程序,提供给刚学单片机程序的朋友参考

USB开发D12的结构-USB D12 structure

程序功能:本程序是利用文件240X.ASM中的子程序对EEPROM 240X进行多字节读写的操作示 例(同样适用于2416).-procedures functions : the procedure is the use of the document 240X.ASM subroutine right EEPROM 240X multi-byte read and write operations examples (the same applies to 2416).

ATMEL单片机可用的文件系统源代码，支持FAT16/FAT32格式。-ATMEL SCM available file system source code, support FAT16/FAT32 format.

RS232串口程序，波特率可自行设置，如9600，19200，接收和发送程序-RS232 serial procedures, its own baud rate settings, such as 9600,19200, receive and send program

C51程序，标把控制器的完整得到程序。已经用在产品上。包括定时器的使用，步进电机的控制技巧。-C51 procedures, the S controller put the integrity of procedures. Already used in products. Timer including the use of the stepper motor control skills.

ATMEGAL16L ICC AVR 可调占空比方波-ATMEGAL16L ICC AVR adjustable duty-cycle square wave

能实现功能有：显示年、月、日、星期、时、分、秒、阴历月日、温度，共21位数码管。其中星期和阴历月日能根据公历自动计算改变，到2050年之前有效。温度可以测量从-10到40℃之间的温度。还可以设定两个定时、12/24小时显示、自动亮暗切换的时间等。 电路只用了两片IC，一片M48，另外一片是74LS145，4-10译码器，来扩充端口。具体电路在下面，是PROTEUS画的，给个图片做参考-To achieve functions: Display year, month, day, week, hour, minute, second, lunar month, the temperature, a total of 21 digital tube. One week and the lunar month on the Gregorian calendar automatically calculated based on changes effective prior to 2050. Can measure temperatures from-10 to 40 ℃ temperature between. Also can set two time, 12/24 hour display, automatic light switch dark time. Circuit used for only 2 IC, an M48, the other is a 74LS145 ,4-10 decoder to expand the port. Specific circuit in the following is the PROTEUS painting, a reference to a picture

ts1620液晶显示的驱动，这种驱动网上一般很小有，是我自己写的并通过了测试-ts1620 LCD driver, which drives the Internet is generally very small, yes, I wrote it myself and passed the test

一个对4X4数字键盘进行行&列扫描,获取扫描码的程序,支持符合键,串键,软件去抖.-one pair of 4x4 digital keyboard ranks scanning, access code scanning procedures, with key support and collaborate keys, software to tremble.

单片机控制步进电机启动停止，正反转以及转速。proteus+keil.(由于大小不够，还加入了RS485在单片机多机通信中的应用，用到RS485接口芯片max487)-keil+proteus+motorstepper