Scrapy can collect data directly through HTTP requests. The scrapy crawler framework does not provide page js rendering services, so we cannot get information, so we need a rendering engine to provide...
[i=s]This post was last edited by qwqwqw2088 on 2021-5-6 08:19[/i]When I first started using desktop computers, I took them apart and looked at the complex motherboards filled with various slots, chip...
[i=s]This post was last edited by wuguangtao on 2020-12-24 08:41[/i] # MSP430F5529 drives 2.2-inch TFT color screen and implements Snake**Snake**, a timeless little game. When I was an undergraduate, ...
1. InterruptionPIE is a peripheral interrupt expansion module, with a total of 96 interrupts after expansion2. Clock28027 series peripheral support3. Watchdog...
[i=s]This post was last edited by donghailao on 2021-11-24 18:04[/i]In order to train students' creative thinking, the teacher gave a thinking question....
A simple square wave signal generator that can adjust the frequency with one button. The LED lights up when the frequency is out of range. The frequency range is 100-1000hz.
#include reg52.hsbit PWMOU...
This is the circuit diagram of a 220V/200W flasher. The frequency/speed at which the light flashes can be adjusted from 1Hz to 5Hz. You can use the PR1 variable resistor (trimmer) to adjust the fla...[Details]
For machinery manufacturers, the pressure of performance and cost is constantly increasing. Even in the field of actuator technology, it is absolutely necessary to create new control structures to me...[Details]
According to foreign media reports, Tesla's plan to build a super factory in Berlin is making progress. Tesla has signed a contract with the Brandenburg state government to acquire approximately 740 ...[Details]
Overall system design
The hardware part is based on Samsung's ARM9 chip S3C2410 and South Korea's dedicated video chip AT2042. S3C2410 mainly implements system control functions, such as confi...[Details]
By using the Zener breakdown characteristics of the voltage regulator tube, a high-frequency signal with a frequency of hundreds of megahertz can be obtained. The circuit is shown in the figure. The ...[Details]
TrendForce, a research organization, released its 2020 top 10 technology trend forecasts on the 2nd, which mentioned that the global semiconductor industry is in decline this year due to the impact o...[Details]
With the rapid development of Internet technology, many emerging industries have been driven. In the past decade, content platforms and their carriers have been constantly evolving, from self-media...[Details]
The floating-point numbers in C51 are represented by the IEEE-754 standard, with a storage length of 4 bytes, which contains 3 bit fields: the sign, the exponent, and the mantissa. (1) Single-digit s...[Details]
Electronic display screens made of light-emitting diode (LED) dot matrix modules have been increasingly widely used in production, life, public places and other aspects. Their scale and complexit...[Details]
TMS320C6713 is a new generation floating-point DSP chip of C6000 series launched by TI based on TMS320C6711. It is the one with the highest performance in C6000 series DSP chips so far. TMS320C6713...[Details]
0 Introduction
As a power supply device for electronic equipment, switching power supply has the advantages of small size, light weight, high efficiency, etc., and has been widely used in digital c...[Details]
A whistleblower @TheGalox_ revealed the detailed parameters of Sony's upcoming flagship phone Xperia 1 III on Twitter today, and announced the expected price. According to the leaked information...[Details]
On June 1, Phone Arena published an article stating that Google Pixel 6a is the best mid-range smartphone in 2022, and Phone Arena called it the "Android version of iPhone SE." Phone Arena pointed ...[Details]
ADS is unstable under Windows 7 and has not been officially updated for a long time. I often use MDK for embedded software development. MDK is simple, easy to use and powerful, so I want to use MDK t...[Details]
Sydney, Australia and Irvine, California, USA, October 23, 2024 -
Morse Microelectronics, a leading global provider of Wi-Fi HaLow solutions, today announced that it has won the "Best Wi-Fi Inn...[Details]