I saw two PCB factories fighting in the forum. The PCB proofing was 9 yuan, 5 yuan, and 1 yuan. I asked the customer service of Jiepei on Taobao, and they replied that it was 9 yuan with free shipping...
I want the serial port to interrupt when receiving data, and the data to be sent is 32 bits, but it seems that only 8 bits can be sent each time. How to initialize the serial port interrupt, and the s...
This was quite frustrating. The computer at work was too weak. Once the virtual machine was turned on, the computer couldn't even open QQ. Compiling once took a lot of time, and it was easy to have pr...
A few days ago, I used ATMEGA16 to make LCD1602 and digital tube electronic clocks, which can adjust the time (hour, minute, second). I feel that the error rate is a bit too large. The error rate is a...
Skills change destiny, opportunities make the future! 1. Microwave Communication Chief Engineer 2 Bachelor degree or above, over 30 years old, with solid theoretical foundation in radio, microwave, el...
Hello everyone, I want to implement the following function: download a binary file from the server to the local directory of the CE5.0 system, try to read the file with InternetOpen, InternetOpenurl, ...
As a wireless broadband metropolitan area network standard, WiMAX technology has greater advantages than previous 3.5GHz MMDS products in terms of non-line-of-sight transmission and spectrum utiliz...[Details]
This paper designs a dot matrix LED text display screen that is easy to update, expandable, and low-cost. The way to reduce costs is
① Use the Bluetooth data transmission function of mobile ph...[Details]
introduction
For the voltage regulator modules (VRMs) that power the latest computer central processing units (CPUs), power supply designers have historically used multiphase interleaved b...[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]
Vertical cavity surface emitting lasers (VCSELs) are gradually replacing traditional edge emitting lasers, especially in low bandwidth and short-distance communication systems where cost factors ar...[Details]
1. System Structure
This system is a simulation system of indoor air-conditioning temperature/humidity control system. The data acquisition and control center collects temperature/humidity...[Details]
PV inverter manufacturer SMA has launched its first DC arc fault circuit interrupter (AFCI) PV inverter and has received UL certification.
The new SunnyBoy AFCI inverter models include 3000-US...[Details]
Printed circuit boards ( PCBs
)
are used in most electrical products
. If a PCB has low
insulation resistance
(IR), the performance of the circuits on the PCB will be greatly reduced...[Details]
Problems such as the depletion of natural resources, air pollution, traffic congestion, and rising fossil fuel prices have forced societies and individuals to seek alternative means of transportati...[Details]
Motors, especially those with brushes, generate a lot of noise. This noise must be dealt with if the appliance is to meet the requirements of EMC standards. The means to solve EMC are nothing more ...[Details]
Abstract: With the development and construction of BeiDou II system, China will shift from the situation dominated by GPS to the situation dominated by BeiDou II global navigation system independen...[Details]
Spatial Division Multiplexing (SDM) MIMO processing can significantly improve spectrum efficiency and thus greatly increase the capacity of wireless communication systems. Spatial Division Multip...[Details]
LED light sources have many environmental advantages, but early products still have certain technical bottlenecks in heat dissipation and high brightness design that cannot be broken through....[Details]
1. Overview
At present, an information revolution is in the ascendant around the world, led by microelectronics, computers and communication technologies, and centered on information technolog...[Details]