97-3108B-28-3PZ(621)

The SysTick timer is bundled in the NVIC and is used to generate the SYSTICK exception (exception number: 15). In the past, most operating systems required a hardware timer to generate the tick inter...[Details]

Display the preset characters in a dot matrix in a marquee style (shift left) from left to right   ;port 3.0~3.6 connect to column ;port 1.0~1.4 connect to row ;delay=0.2s ;========== ;=  Main  ...[Details]

The voltage in the telephone line is 20V. When a call comes in, the voltage of the telephone line rises to 48V and the phone rings. When the phone is picked up to answer, the voltage of the telepho...[Details]

This is a program from the 51hei development board area. The comments are very detailed and there is no problem running it. The original address is: http://www.51hei.com/bbs/dispbbs.asp?boardid=1...[Details]

Six things to pay attention to before installing the speaker 1. Safety: During the disassembly and assembly process, the original car circuit cannot be damaged or short-circuited. When...[Details]

Whether in principle or in practice, the advantages of electronic crossover have been widely recognized. But why has it not been widely promoted? I think there are two main reasons:     First, the e...[Details]

Regarding the protection of low battery voltage, today I have designed a battery power shortage protection circuit for you. The manual switch is a hiccup protection with an interval of about 3...[Details]

Abstract: This paper introduces the working principle, characteristics, application and maintenance issues of valve-regulated lead-acid batteries, and explains how to select batteries for UPS and powe...[Details]

       The Samsung Note10 series arrived as expected. As Samsung's flagship in the second half of the year, the overall style of this generation of Samsung Note10 series has become tougher, and the s...[Details]

I don’t know when it started, but people would be embarrassed to mention a car computer chip other than 8155 at a press conference. These numbers have even become a sign of a good car computer expe...[Details]

■ Overview In recent years, LCD screens are no longer limited to the original mid-to-high-end products, but are increasingly popular in mobile phones and some portable handheld game c...[Details]

The CVPR 2021 Autonomous Driving Workshop announced the final results of this year's Waymo Open Dataset Challenge. The Horizon Robotics team won the first place in the real-time 3D detection project ...[Details]

The selection of characteristic impedance of radio frequency coaxial cable mainly depends on factors such as power capacity, attenuation intensity, and processability. However, the characteristic imp...[Details]

On the 8th, the reporter learned from Tsinghua University that the research group of Professor Zhou Shuyun of the Department of Physics of the university has realized the Floquet instantaneous band...[Details]

Servo motors are very important drive devices in the field of modern industrial automation. They have the characteristics of high precision, high response speed, and high stability. However, in act...[Details]