天嵌TQ2440的裸机代码，包括串口、LCD、PWD、蜂鸣器等裸机代码...

Part IV In part II we discussed the conversion of binary numbers into decimal digits. It is sometimes useful to build circuits that use this method of representing decimal numbers, in which each decimal digit is represented using four bits. This scheme is known as the binary coded decimal (BCD) representation. As an example, the decimal value 59 is encoded in BCD form as 0101 1001. You are to design a circuit that adds two BCD digits. The inputs to the circuit are BCD numbers A and B, plus a carry-in, cin. The output should be a two-digit BCD sum S1S0. Note that the largest sum that needs to be handled by this circuit is S

nRF24E1作为 RF处理芯片，内带51处理器，其频段处于ISM频段，通信速度可以达到1M，可以进行跳频处理，在短距离高速度通信上有非常良好的功能。-nRF24E1 as an RF chip, which with 51 processors, the band at ISM band, communication speed can reach 1M, can Hopping, a short distance high-speed communications on a very good function.

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一种MNODEM的控制程序.采用状态机的机制实现.-A control program MNODEM. The use of state machine mechanisms.

资源描述WINCE 下HP PCL打印机驱动例程。对于开发wince系统下的打印机具有参考价值。hp打印机PCL语言分为多个版本PCL1--PCL6 PCL3 GUI,wince 对HP打印机只支持PCL语言的，如果针对不同的打印机要开发相应的驱动程序。

NIOSII 实验指导，适合业内初学人士使用。。。。。十分赞啊-NIOSII experimental guidance for the industry to use the beginner. . . . . Ah very Zan

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

ATMEL AT91SAM USB Mass Storage Module

使用msp430f149io口模拟i2c协议，驱动液晶屏，使其显示汉字，使其显示图片

上电后，LED1-3 会按照默认的 500ms 间隔，明暗闪烁，此时可以通过 串口助手 SSCOM3.2 发出指令，设置 LED1,LED2,LED3 的闪烁间隔时间。间隔范围是 1-65535ms。可以设置任意一个 LED 得闪烁间隔时间，  通过这个实验，可以学习 ucosII 的 任务建立，及任务调度，  事件同步等内容。 本例程共建立了 5 个任务，分别是主任务，  串口 COM1 通信任务，LED1 闪烁任务，LED2 闪烁任务，LED3 闪烁任务。