现在一个设计xc3s400,ise10.1,综合器为SynplifyERROR:$ar:228 - At least one timing constraint is impossible to meet because component delays alone exceed the constraint. A timing constraint summary below shows the...
I've been soldering some DIY kits recently. After I soldered the kits, I found a problem... I want to ask for help from the experts to help me solve the problem... 1. What usually causes the output of...
[i=s]This post was last edited by dontium on 2015-1-23 13:01[/i]1. Select device
2. Determine input and output conditions3、Design Now4. Everything came out:
Circuit Diagramsimulation:……https://analogt...
On February 25, Weimob Group announced on the Hong Kong Stock Exchange that its SaaS business data had been “destroyed” by an employee. The employee has now been criminally detained.
Weimob said that ...
Hello! I have seen a post: \"Please advise: How to program such a waveform\". (Posted on June 10, 2006 at 12:37)Your reply is included in it. The program you gave (to generate PWM wave)#include \"LF24...
[color=#000000][font="]I recently wanted to write a simple [/font][font=PingFang SC, Lantinghei SC, Microsoft YaHei, arial, 宋体, sans-serif, tahoma] operating system on Cortex-M3, and planned to use IA...
High efficiency and low standby power consumption are two major challenges in today's switching power supply design. Resonant topology or LLC topology is becoming increasingly popular because it ca...[Details]
Do you often have to add brake fluid to your car's brakes? The fact that you need to pump out the brake fluid to make sure there is no gas in the brake fluid line may not be done by the car owner h...[Details]
For a long time, due to the limitation of hardware conditions, the display devices of traditional small handheld devices such as PDA are usually monochrome LCD, and the user interface is very simpl...[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]
With the development and widespread application of computer technology, especially in the field of industrial control, computer communication is particularly important. Although serial communication g...[Details]
On the afternoon of July 10, Beijing time, Taiwan's largest chip designer MediaTek expects its smartphone chip shipments to grow by double digits in the third quarter of this year, and the company is ...[Details]
1 Introduction
In recent years, there have been many major advances in the production technology and processes of automotive headlights, which have greatly improved the performance of automoti...[Details]
Different initialization between C8051F and 80C51 series microcontrollers
In the past 30 years, major electronic component manufacturers in the world have launched their own unique single-chip...[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]
LED guardrail lights use fluorescent tubes or LEDs as light sources and continuous guardrails as carriers to form an approximately linear guardrail light strip. This article mainly introduces...[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]
Fruit planting is an important part of China's agricultural development, and fruit tree pest control operations are becoming more and more important. At present, the overall level of pesticide applica...[Details]
Abstract: In order to realize wireless automatic alarm and monitoring of major safety places, based on the basic principle of pyroelectric infrared sensing, a detector for receiving infrared radia...[Details]
Almost everyone in a student dormitory has a bedside lamp. But if you want to read for a while after turning off the lights and don't want to disturb your roommates' sleep, you may need a reading l...[Details]
The fluorescent lamps and energy-saving lamps we commonly use now have greatly improved luminous efficiency compared with the earlier ordinary incandescent lamps and have been widely used. With the...[Details]