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TFT-char
keil环境下，c代码工程。TFT液晶屏字符和汉字显示程序，TFT彩屏驱动程序的编写、处理字模数组数据(keil environment, c the code works. TFT LCD screen and Chinese character display program, TFT color display driver preparation, processing array data matrix)
- 2011-07-30 11:54:22下载
- 积分：1
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PCtoLCD2002
这是应用于单片机的人机界面菜单的液晶取模软件，在window XP下编辑，再复制到程序中即可。( this is a soft use for lcd munue edit)
- 2010-05-24 13:57:06下载
- 积分：1
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4.2.4
《单片机C语言编程与实例》的代码,使用keil编程环境,供大家参考( Microcontroller C programming language and examples of code, using keil programming environment, for your reference)
- 2008-07-29 15:12:33下载
- 积分：1
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交通灯
一个交通灯的设计，具有自动控制与手动控制的功能。(The design of a traffic light has the function of automatic control and manual control.)
- 2018-01-28 16:29:14下载
- 积分：1
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shuanglushuzihecheng
摘要
电能表作为用电量的测量工具广泛的应用于各种场合。在电能表校表系统中,需要的最基本的输入信号源是高精度双路正弦信号源,并要求可对其频率、相位、幅值进行调节,来对电能表进行校准。
基于单片机的程控信号源设计，运用数字调相、数字调幅和数字调频等技术，要求实现相位、幅度、频率的高精度程控调节。本文设计了一种利用锁相环频率合成技术和数字波形合成技术组成的程控低频正弦波信号发生器，并给出了调幅、调频、调相的实用电路，频率调节通过改变8253计数器的分频系数来实现；相位调节由51单片机预置计数器的计数初值来完成，幅度的调整通过改变DAC1210II的参考电压来实现，使频率分辨率达0.01Hz,相位调节精度达0.1°，并介绍电路中的主要芯的功能及使用。输出正弦波频率和幅值的精度高，稳定性好，失真度低，电路简单、可靠、便于程控。
关键词：数字合成信号源；程控；调幅；调频；移相；
(Abstract
Meter consumption as the size of the measurement tool is widely used in various occasions. In single-phase power meter verify system, the most basic needs of the input signal is the source of two-way high-precision sine signal source, and may request its frequency, phase, amplitude in a certain step to adjust to the imitate of the actual electricity load with a right meter calibration.
Design of the programmable signal supply controlled source，which based on the MCU，including digital phase adjustment，distal amplitude adjustment，digital frequency adjustment etc．The system should achieve high quality digital adjustment of phase, amplitude and frequency. This paper describes the use of a PLL frequency synthesizer technology, and digital wave form synthesis technology consisting of program-controlled low-frequency sine wave signal issued devices, and applies the amplitude， frequency， phase of practical circuit. Frequency can be adjusted through a change in the 8253 counter-frequ)
- 2021-04-08 20:19:00下载
- 积分：1
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TM-28-initial-code-V0.1
ST7789S-G4A的初始化代码，该IC能够零电容实现2.8寸TFT屏驱动(ST7789S-G4A initialization code, the IC can achieve zero capacitance drive 2.8 inch TFT screen)
- 2021-04-09 15:28:59下载
- 积分：1
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Circuit1
有源低通滤波器仿真电路图，是二阶低通滤波器的仿真原理图(Active low-pass filter circuit simulation, is the second-order low-pass filter simulation schematic)
- 2014-05-25 20:23:46下载
- 积分：1
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cable-forces-test
根据随机振动法索力测量的原理，采用MMA8452Q加速度传感器模块来采集信号,STC89C52单片机为控制芯片测量斜拉索的拉力。(According to the principle of random vibration Faso force measurement, MMA8452Q acceleration sensor module to capture the signal, pull control chip measurement cables STC89C52 microcontroller.)
- 2013-03-29 23:51:59下载
- 积分：1
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Philips_915ad
说明： 用PHILIPS P89LPC915 完成的A/D 和 D/A转换的C源程序.(Philips P89LPC915 complete with A/D and D/A conversion of the C source.)
- 2005-12-26 09:44:22下载
- 积分：1
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J1939源代码??
J1939在S32单片机上的实现，采用C语言的完整代码，含例子。(Implementation of J1939 on S32 MCU)
- 2021-01-12 19:28:49下载
- 积分：1
