SD2.0和3.0中文协议

基于C语言编写一个程序，实现将存放在文件中的学号、姓名、电话等信息读出并显示出来。(Write a program based on the C language, the implementation will be stored in a file number, name, telephone and other information is read out and displayed.)

it is aproject to connect lpc1788 to touch panel 7 inch by spi XPT2046 driver

单片机工程应用中，开机时跑马灯代码，实现五个led的顺序闪烁，可实现运行提示功能(Marquee code)

MQ137气体传感器采集的模拟电压数据再MSP430内部ADC12转换成数字信号(the module of ADC12 in MSP430 converts the analog voltage sampled by transducer of MQ137 to digital signal )

：LTE(Long Term Evolution，长期演进)系统中的小区初始搜索过程通过分别检测主同步信号(Primary Synchronization Signal，PSS)和辅同步信号(Secondary Synchronization Signal，SSS)来完成，搜 索结果包括小区组ID、符号定时、频偏估计、组内小区ID以及帧定时[1]。然而，若接收信号   1IDN  2IDN 中存在整数倍频偏，则由于时域的相位旋转，主同步信号将很难用传统的相关算法检测到。提出一种主同步信号与整数倍频偏联合检测的方法，即使存在整数倍频偏，也能得到正确的符号定时。辅同步信号采用的是非相干的差分相关检测[2]，仿真表明，与传统的匹配滤波算法相比，可以有效的对抗信道时延扩展和载波频偏，适用于高速场景下时分双工(Time Division Duplex，TDD)LTE系统的同步。(In LTE systems, the initial cell search process is completed by detecting the primary synchroniza-tion signal and the secondary synchronization signal. The searching results include cell ID group, symbol timing, frequency offset estimation, intra group cell ID and frame timing[1]. However, if integer frequency offset presents in the received signal, due to time-domain phase rotation, the primary synchronization signal will be difficult to detected using the conventional correlation algorithm. A new joint detection method for integer frequency offset and primary synchronization signal is proposed, which can get the correct symbol timing even if the presence of integer frequency offset. Secondary synchronization signal is processed using the differential non-coherent correlation detection method[2]. Simulations show that compared with the tradi-tional matched filtering algorithms, it can effectively combat the channel delay spread and carrier frequency offset and especially suitable for )

1、掌握利用A/D转换和计算机资源实现示波器的设计方法。 2、设计虚拟示波器。 3、建立NI-DAQmx仿真设备，选择E系列中的NI PCI-6071E数据采集卡的仿真模块，通过DAQmx物理通道识别，产生模拟信号，然后基于LabVIEW开发平台设计实现虚拟示波器。(1, master the use of A/D conversion and the design method of the computer resources to realize the oscilloscope. 2, the design of virtual oscilloscope. 3, establishment of NI- DAQmx simulation equipment, select the NI PCI- 6071- E E series simulation module of data acquisition card via DAQmx physical channel identification, produce analog signal, and then design the virtual oscilloscope based on LabVIEW development platform.)

51单片机发送，三星的S3C2440接收，并点亮led小灯，通信波特率是115200，单片机采用定时器2来实现该波特率(51 SCM to send, samsung s S3C2440 receiving, and lit led lights, communication baud rate is 115200, microcontroller timer to achieve this by 2 baud rate )

LCD初始化代码，能够点亮SSD2119 driver IC液晶屏(init LCD)

基于51单片机的TDC-GP21温度采集程序(Based on 51 single-chip temperature acquisition procedures TDC-GP21)

说明：  基于51单片机通信的其中一种，I2C总线通信。(I2C bus communication is one of 51 MCU communication.)