nokia5110-for-51

说明：  这是基于stc11F60XE的语音识别程序，编译环境keil4(This is a speech recognition program based on stc11F60XE, compiler environment keil4)

stm32 串口 时钟，跑马灯 实验代码 。 包含函数库法和 寄存器两种方法。(stm32 serial clock, marquees experimental code. Kufa and register contains the function in two ways.)

说明：  STM32控制AD7606采集，串行方式；开发平台KEIL5，开发板：正点原子公司战舰V3(STM32 control AD7606 acquisition, serial mode;Development platform KEIL5, development board: point atomic battleship V3)

说明：  基于STM32的脉搏电子血压计（原理图+程序）(Pulse electronic sphygmomanometer based on STM32 (schematic + program))

用C语言编写STM32嵌入式程序，设计一个万年历系统，并用HX1230屏显示相关的时间信息。 基本要求： 1.C语言程序要求是模块化设计。 2.该万年历要求能显示时间（时、分、秒）、年月日及闹钟定时时间（分、秒）。 3.该系统由2-3个按键可调整显示的时间、年月日及闹钟定时时间，具体各个按键功能及编程方式自定。 4.该闹钟可以定时时间到，LED将发出提示闪光，且持续30s。 5.HX1230屏能驱动显示。 6.定时时间可被打断，即打断后恢复时继续计时。 7.设置闹钟报警功能； 8.利用STM32自带的温度传感器功能，使系统能显示当前环境温度值。(STM32 embedded program is written in C language, a calendar system is designed, and relevant time information is displayed on HX1230 screen. Basic requirements: 1. The requirement of C language program is modular design. The calendar requires that time (hours, minutes, seconds), year, month, day and alarm clock timing time (minutes, seconds) be displayed. 3. The system can adjust the display time, year, month, day and alarm clock timing time by 2-3 keys, and the function and programming mode of each key are self-determined. 4. The alarm clock can be scheduled to arrive, and the LED will give a prompt to flash, and lasts for 30 seconds. 5. HX1230 screen can drive display. 6. Timing time can be interrupted, i.e. when the interruption is resumed, the timing will continue. 7. Setting alarm function of alarm clock; 8. Using the temperature sensor function of STM32, the system can display the current environmental temperature)

Scratch pad register offsets used by the host to communicate device page DMA address to the card.

将BLIF（Berkeley Logic Interchange Format）格式的电路转换为verilog代码，使用perl编写，需要perl环境才能使用。 内含BLIF格式的官方说明。(Translate BLIF（Berkeley Logic Interchange Format）circuit to verilog description, the translator need perl environment to run. Please check you have related tools. Also include a offical document about BLIF explanation.)

stm32学习 十三：RS485总线的使用 十四：TFT屏的图片，中文和字符显示(stm32 learning 13: RS485 bus use 14: TFT screen pictures, Chinese, and character)

基于saber2007仿真的移相全桥DC-DC变换器，单路原理图，使用UC3875芯片(Simulation-based saber2007 phase-shifted full-bridge DC-DC converter, single schematics, using UC3875 chip)

This is PCB and schematic of USB to Serial converter using PL2303HXD chip.