主要讲述了单片机和超声波模块超声波测距，十分好。

精电VP12864图形点阵的驱动,包括实现与CPU的接线图描述-Varitronix VP12864 lattice graphics drivers, including with the CPU described in the wiring diagram

Modbus RTU Slave project based on Microchip PIC 16F87X processor and 24LC128 CMOS Serial EEPROM with I2C interface. PIC Modbus RTU slave supports write and read (3 and 16) functions. The data is stored and read from EEPROM via the I2C bus. You can write/read up to 8000 registers. In a single frame can be read/write 32 registers . The program was written in the HI-TECH C compiler-Modbus RTU Slave project based on Microchip PIC 16F87X processor and 24LC128 CMOS Serial EEPROM with I2C interface. PIC Modbus RTU slave supports write and read (3 and 16) functions. The data is stored and read from EEPROM via the I2C bus. You can write/read up to 8000 registers. In a single frame can be read/write 32 registers . The program was written in the HI-TECH C compiler

对于上位机而言： 1、建立项目；  2、在项目中插入MSComm控件   3、利用ClassWizard定义CMSComm类控制变量  4、在对话框中添加控件     5、添加串口事件消息处理函数OnComm()  6、打开和设置串口参数  7、发送数据   8、发送十六进制字符   9、在接收框中以十六进制显示  对于下位机来说：只需要将串口通信程序下载到下位机即可，不过在连接串口猎人时一定要匹配端口号和波特率。 

AVR编程C原代码-C source code

通向ip设计的必看的一本书籍--A good book for IP design.

应用背景The CMX990 provides, on-chip: a flexible, formattable GMSK packet and freeformat modem, a dual synthesiser fed from an external source, IF and RF transceiver stages for both Rx and Tx modes, and auxiliary ADCs and DACs for system control and monitoring.关键技术Operating in the range of 400MHz to 1GHz at data rates of 4 to 16 kbps. This single-chip, half-duplex device requires a minimum of external components, keeping end-product board size, power consumption and cost to an absolute minimum. The versatile GMSK modem is configured for either packet and freeformat data operation via an efficient task-oriented Rx and Tx format and command structure combined with data scrambling, interleaving and FEC and CRC capabilities. Rx data acquisition, extraction and tracking functions use Rx data-quality feedback to support varying signal environments. IF and RF functions in the Tx path handle all the signal processing requi

PIC16f877的lcd12864驱动程序（带字库屏）-PIC16f877 the lcd12864 driver (with character screen)

This a Good IDN Client.

详细的usb设计sch pcb图纸，及源代码，可以参考-Usb detailed design drawings sch pcb and source code, can refer to

产生声音与PIC16F84a和伟大的AY38910。