I used max232cpe to make a serial burner, mainly to burn STC51 microcontroller, but it just doesn't work. I saw in max232 that the capacitors around max232 are 1u, and the capacitors used by max232A a...
My development environment is VS2005, and I use PocketPC2003. The code is as follows: #include "ddraw.h" #pragma comment(lib,"ddraw.lib") [i]...... IDirectDraw* pclDirectDraw; if (FAILED(DirectDrawCre...
I set the HPIC register to 0x0B0B in my dsp, which generates a HINT interrupt, but the HINT pin is always high when I use a meter to measure it. Do I need to make relevant settings in the Interrupt Ev...
Question: 1. How to define a global variable that can be used in multiple source files? 2. Can I define it at the beginning of the source file where the main function is located? Thank you!...
Author: Chen Jie and Zheng Yuquan, School of Automation and Electrical Engineering, Beijing University of Aeronautics and Astronautics This article introduces a simple, easy-to-use and reliable on/off...
Hey brothers, I wrote a simple program but it cannot execute at tt==20. Can an expert help me? Thank you#include#define uint unsigned int#define uchar unsigned charuchar num,tt;uchar ta××e[]={0xc0,0xf...
Today, with the increasing integration of functions, mobile phones can also be used as portable media players (PMP), digital cameras, handheld computers (PDAs), and even global positioning systems ...[Details]
introduction
Throughout the history of automotive lighting, power has always played an important role. Initially, cars only needed headlights to see the road in the dark. Later, other light so...[Details]
Battery life is critical for portable applications. For applications such as smoke detectors, security devices, and thermostats, factory-installed batteries need to last for more than 10 years. The...[Details]
0 Introduction
With the development of society, people pay more and more attention to security work. Monitoring products have been used in various fields instead of being used only in importan...[Details]
introduction
The emergence of high-performance, low-power embedded CPUs and high-reliability network operating systems has made it possible to implement applications with large amounts of comp...[Details]
1 Introduction
Water resources are the basic conditions for human survival and the lifeline of economic development. The reality shows that due to the global shortage of water resources and th...[Details]
I've been studying dot matrix recently. It looks simple, but it takes a while to master it completely! The 8*8 dot matrix hardware circuit I'm making now is like this. The row is driven by 74HC138 + t...[Details]
0 Introduction
Ultrasonic waves
are mechanical waves with a frequency of more than 20KHz, and the propagation speed in the air is about 340 m/s (at 20°C). Ultrasonic waves can be gene...[Details]
Every time I go home and walk up the stairs, I am always scared. The corridor lights are often broken, and no one changes the bulbs, or they are not smart enough and need to be operated manually. E...[Details]
The capacity of a battery depends on the amount of charge and discharge, in addition to some factors of the battery itself. Obviously, if the charge and discharge of the battery can be recorded all...[Details]
As a new type of centralized and decentralized elevator control system, serial communication has been widely used in China. Compared with the previous centralized and unified control system, each s...[Details]
UDN2916LB is a two-phase stepper motor bipolar driver integrated circuit launched by SANKEN. It can drive dual-winding bipolar stepper motors and is particularly suitable for controlling dual-step ...[Details]
1 Introduction
With the rapid development of my country's economy, the country has introduced a series of policies such as preferential policies, subsidy policies, and old-for-new policies, wh...[Details]
As a type of iron battery, lithium iron phosphate battery (hereinafter referred to as lithium iron battery) has always been widely concerned by industry friends (some people say that lithium iron b...[Details]
Reliability and real-time performance are the basic requirements for control systems. Initially, motor control used analog circuits with discrete components. With the advancement of electronic tech...[Details]
Embedded System
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