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ds1302
程序是DS1302做的电子时钟，内部有DS1302的datasheet和具体的程序(Program is the DS1302 doing electronic clock within the DS1302 datasheet and specific program)
- 2013-03-06 16:58:17下载
- 积分：1
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M5310
中国移动物联网NB-IOT模块m5310的pcb封装，现成的，直接用(China Mobile NB module m5310 pcb package)
- 2019-01-11 16:20:25下载
- 积分：1
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X2-Software
emv chip reader writer
- 2020-07-02 13:40:02下载
- 积分：1
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fengmingqi
stc89c52单片机驱动蜂鸣器的程序，延时函数用定时器方式编写。(stc89c52 MCU-driven buzzer procedures, with the timer delay function approach to the preparation.)
- 2010-02-08 16:56:27下载
- 积分：1
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cheng
滤波器广泛应用于数字信号处理、通信、自动控制领域,但设计可变宽频带有源滤波器则比较困难。利用单片机控制参数可编程的双二阶通用开关电容有源滤波器,精确设置有源滤波器的中心频率f，品质因数Q及有源滤波器的工作方式。本系统主要分为两个部分:即程控滤波器和程控放大器。程控放大器电压增益为40dB，通过单片机控制DA进行分压，可精确实现要求的10dB步进，误差小于0.5 ，通带为100Hz-500KHz，输入电压峰－峰值范围为10mV，在输入范围内无明显失真。由MAX264为核心的滤波器，可设置为高通、低通滤波器。通过单片机直接给出控制频率，使-3dB截止频率在1KHz-20KHz内可调，步进1KHz，误差小于1 。整个系统以52单片机为控制核心，电路简单，性能稳定，且具有较高精度，滤波参数调节通过单片机控制，较为方便。(Filters are widely used in digital signal processing, communications, automatic control area, but the design variable wideband active filter is more difficult. Control parameters using single-chip programmable universal switched-capacitor biquad active filter, active filter accurately set the center frequency f, quality factor Q and the active filter works. The system is mainly divided into two parts: the program-controlled filters and programmable amplifiers. Programmable amplifier voltage gain of 40dB, the DA through the partial pressure of single-chip control, can accurately achieve the required 10dB step, the error is less than 0.5 , passband to 100Hz-500KHz, input voltage peak- the range of 10mV, the input range no significant distortion. By the MAX264 as the core of filter can be set to high pass, low pass filter. Given directly by the microcontroller controls the frequency, the-3dB cutoff frequency at 1KHz-20KHz adjustable, step 1KHz, error is less than 1 . The entire system for)
- 2011-07-17 16:23:27下载
- 积分：1
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IR-decoding-digital-display
IR decoding digital display
- 2013-10-06 00:06:17下载
- 积分：1
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ZEVA-BMS-Software
bms 管理软件，c语言编写，基于单片机编写(bms management software, c language,)
- 2013-07-02 22:20:17下载
- 积分：1
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完整通信好使电机转 - TM3 -
1.基于STM32利用DRV871驱动步进电机
2.配置SPI使STM32和DRV871通信控制步进电机
3.配置PWM控制DRV871的Step来控制步进电机的转速(1. using DRV871 to drive the stepper motor based on STM32
2. configuration SPI makes STM32 and DRV871 communication control step motor
3. configuration PWM controls the Step of DRV871 to control the speed of the stepper motor)
- 2018-01-04 14:30:58下载
- 积分：1
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Abis-IP
Abis接口IP化方案及应用
Abis接口IP化方案及应用(Abis interface to IP-based solutions and application of Abis interface to IP-based solutions and application of)
- 2010-01-15 08:05:34下载
- 积分：1
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DS2480芯片是实现1-wire协议的芯片 driver_for_DS2480_chip
DS2480芯片是实现1-wire协议的芯片。本驱动使用C8051F206单片机与DS2480芯片进行交互，并读取1-wire总线上DS1990A芯片的ROM码。(This is DS2480 chip driver)
- 2009-02-03 02:00:01下载
- 积分：1
