1. Frame structure comparison
1. Similarities between 4G and 5G
The frame and subframe lengths are both 10ms and 1ms.
Minimum scheduling unit resource: RBDifferences between 2.4G and 5G
1); Subcarrier...
Popular Science: USB Type-C : https://training.eeworld.com.cn/course/4779It's very small, reversible, has multiple pins, and can charge at high currents... It's the Type-C port. Let's learn about this...
MCU Peripheral Circuit_Lao Wu MCU Practice : https://training.eeworld.com.cn/course/5323Beginners start with the development board + marquee. Although the program runs successfully, they are still con...
One of my projects requires 8-way regulated power supply, 4V to 5V is fine, but it must be stable and not fluctuate too much, and each way has a load of about 5mA. I want to use a reference source chi...
In western Michigan, one of the "Rust Belts" in the United States and a traditional industrial Great Lakes region, there is a city of Big Rapids with a population of just over 10,000. This small sate...[Details]
Jiwei.com News (Text/Lantian): On the evening of August 25, the domestic artificial intelligence company Megvii Technology disclosed its prospectus on the Hong Kong Stock Exchange. Public informatio...[Details]
We often use multimeters, signal generators, oscilloscopes and other equipment in our study and experiments of electronic technology. Multimeters can detect electronic components and measure voltage,...[Details]
Abstract: This article briefly introduces the DiSEqC standard and presents a DiSEqC-compliant power supply circuit designed using the MAX1771. The application circuit provides the required 22kHz pu...[Details]
This week, American investment institution Mangrove Capital Partners released the 2019 "Voice Technology Report" titled "Voice: Welcome to the Next Generation of Disruptors". This report summarizes t...[Details]
This design aims to produce a powerful alarm system that can promptly notify the parties involved in an emergency, even if they are not near the scene, and automatically call the police. Compared w...[Details]
Task: Implement parallel multitasking without considering the interrupt problem. I will consider the interrupt problem in "51 Operating System Learning Notes (II)" and study a more complex operating ...[Details]
The USB to serial port cables on the market are very cheap, and most machines do not have serial ports. Therefore, it is quite common to develop and use USB to serial port cables under embedded LIN...[Details]
1. Control structure of switching power supply:
Generally speaking, the switching power supply is roughly composed of four main parts: input circuit, converter, control circuit, and ou...[Details]
The world's largest 100MW and large-scale outdoor demonstration base, source: State Power Investment Corporation Huanghe Hydropower
Recently, the State Power Investment Corporation (SPIC) ...[Details]
The thermal performance of LED products has a great impact on their optical, color, electrical performance, reliability , and service life, so their thermal management design and measurement ...[Details]
IoT devices, such as portable health monitors and wearables, are inherently vulnerable to hacking because they are connected to the internet. From attacking devices with a distributed denial of ser...[Details]
Human fingerprints have become the first choice of modern biometrics technology due to their long-term invariance, stability and difficulty in forgery. The automatic fingerprint identification syst...[Details]
In embedded systems, the computer system that runs the target program is usually called the target machine. Since the target system often does not have the necessary human-computer interface for input...[Details]
At Apple’s last fall conference in 2020, Apple brought its first self-developed SoC - M1. The M1 chip adopts the classic big and small core design of the ARM architecture, coupled with the neur...[Details]
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