The day before yesterday, I posted a thread in this forum, discussing how to write a function in MDK5 to display a complex string on the TFT screen, such as LCD_SHOWSTRING ("aa我我"). To display this st...
Analog IIC is a relatively simple way to lock IIC. It is easy to program and modify. So I usually use analog IIC for IIC operation. The OLED program is based on the OLED display code of Zhengdian Atom...
Our platform is 2440, wince5.0, when tested on a virtual machine, there is no problem playing wmv files, but when it is played on the board with ceplayer, it is very stuck, but it is acceptable to pla...
It is reported that in the current economic downturn, it is the [url=http://www.eepw.com.cn/news/listbylabel/label/智能手机][size=2][color=#000000]smartphones[/color][/size][/url] that have driven the gro...
I designed two power supplies on my board, one provides 3.3V/850mA to power the MSP430 microcontroller, and the other provides 4V/3A to power the GPRS module. My teacher suggested that I add ferrite b...
I am using the TM4C129ENCPDT chip. When I need to use the serial port DMA to send, why does the program freeze when we enable the serial port DMA sending function and the serial port sending interrupt...
This article discusses how to wake up a touch-sensitive device such as a tablet without touching the device, using basic gesture recognition and novel proximity sensors. The article discusses the p...[Details]
Introduction
Power subsystems are becoming more and more integrated into the overall system. Power systems have moved from being separate "essential dangerous devices" to being monitorable...[Details]
1. What is temperature?
Heat is a type of molecular motion. The hotter an object is, the faster its molecules move. Absolute zero is defined as the temperature at which all molecular motion ...[Details]
Smart lighting control systems provide high controllability for various buildings and further enhance the level of green energy. They are the core products of energy conservation and digital techn...[Details]
With the continuous consumption of earth's energy and the scarcity of resources, the harm of greenhouse effect to human beings, and the serious pollution of the atmosphere to the earth, the intern...[Details]
LED lamps and bulbs are now rapidly replacing incandescent, halogen and CFL (compact fluorescent lamp) light sources in many general lighting applications. Flyback DC/DC converters are the power su...[Details]
The traditional display screen using 51 single-chip microcomputer to control LED dot matrix has relatively simple functions. If it is to achieve diversified functions, it often takes a lot of time ...[Details]
FPGAs are used in 81% of electronic systems, including many commercial and defense products, and most FPGAs use BGA packaging. The BGA packaging is characterized by small solder balls and small sol...[Details]
At very low temperatures, certain metals and alloys lose their resistance to electric
current
and become
superconductors
. Two parameters that are often measured are the transition ...[Details]
1. Disadvantages of choosing too high a voltage level
Choosing too high a voltage level will result in too high an investment and a long payback period. As the voltage level increases, the...[Details]
At present, how various communication technologies will evolve after 3G is a focus of great concern in the industry. Especially for TD-SCDMA, whether it can achieve smooth evolution to the next gen...[Details]
At present, a large number of cooling tower fans, speed fans and special fans are in use in petroleum, chemical, pharmaceutical, metallurgical and other enterprises. Some fans have no monitoring in...[Details]
In order to prevent the lithium battery from being damaged by abnormal conditions such as overcharge, over discharge, and overcurrent, a lithium battery protection device is usually used to prevent...[Details]
1 Introduction
Lijia'an Yellow River Diversion Culvert is a large gravity diversion gate in the lower reaches of the Yellow River. The Yellow River Diversion Culvert is located in Lijia'an Vi...[Details]
1. Introduction
Stepper motor is a basic component that converts electrical energy into kinetic energy. It has been widely used in a variety of electromechanical equipment, such as various machine...[Details]