[i=s] This post was last edited by lb8820265 on 2017-5-11 22:32 [/i] [align=left][font=微软雅黑][size=3] I'm sorry for not updating for a long time. The quadcopter is still going on and the hardware is be...
I want to ask if the first chapter of all books is about the basic knowledge of hardware. Do I have to learn this before I can continue to learn? Because for beginners, the basic knowledge seems too b...
Clock circuit selection principles 1. When multiple clock signals of different frequencies are required in the system, programmable clock chips are preferred; 2. When a single clock signal is used, a ...
Recently, we were targeted by an AD company, and they found our company's information accurately. I am curious about how the AD company identified our company.The Internet service provider of the park...
Hello, I recently bought an STM3210E-EVAL development board for learning, and downloaded the latest supporting sample program. The development environment I used is: IAR Embedded Workbench for ARM 5.4...
The GPRS module is SIM300. I connect to the Baidu webpage through the following command: AT+CIPSTART="TCP","220.181.6.18","80". If I don't send data, or do nothing after sending data, IP CLOSE will ap...
In early 2002, I started to write a working program for an IC card prepaid electricity meter. The meter used Philips' 8-bit 51-expanded single-chip microcomputer
87LPC764
, and wa...[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]
To differentiate their products in a crowded and competitive market, manufacturers of handheld devices often consider battery life and power management as key selling points for cell phones, PDAs, ...[Details]
July 11, 2012, Beijing - Altera Corporation (NASDAQ: ALTR) today announced the launch of 40-Gbps Ethernet (40GbE) and 100-Gbps Ethernet (100GbE) intellectual property (IP) core products. These core...[Details]
1. What is temperature?
Heat is a type of molecular motion. The hotter an object is, the faster its molecules move. Absolute zero is defined as the temperature at which all molecular motion ...[Details]
In the single-chip microcomputer system, in addition to display devices, sound devices are often used, and the most common sound device is the buzzer. Buzzers are generally used for some low-demand...[Details]
1 Introduction
Ultrasound refers to elastic vibration with a frequency higher than the audible frequency limit (i.e., in the frequency band above 20 kHz). The propagation process of this vib...[Details]
At present, a large number of cooling tower fans, speed fans and special fans are in use in petroleum, chemical, pharmaceutical, metallurgical and other enterprises. Some fans have no monitoring in...[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]
1 Introduction
At present, advocating health has become the focus of people's attention, and the emergence of treadmills has become more and more popular. People can exercise at home or in the ...[Details]
When developing electronic products with processors, how to improve anti-interference ability and electromagnetic compatibility?
1. The following systems should pay special attention to anti-...[Details]
In the past 20 years, although the inverters that use power transistors (GTR) as inverter power devices, 8-bit microprocessors as control cores, and realize asynchronous motor speed regulation acco...[Details]
With the rapid development of information technology represented by computers, semi-physical simulation technology plays an important role in many military and civilian fields such as aerospace and co...[Details]
As the automobile consumer market heats up, the safety performance of automobiles has attracted more attention from consumers. When driving at high speed, tire failure is the most worrying and diff...[Details]
1 Introduction
The coke oven gas recovery system is mainly composed of a gas tank and a pressure reducing station. While realizing the recycling and reuse of coke oven gas, it also plays an imp...[Details]