USB HID communication requires analog plugging and unplugging. How many MS are required to set the D+ signal line to 0 level? Is there any specific time requirement?...
Looking to buy second-hand development boards for USB2.0 chips such as ISP1581/ISP1583. Just a circuit board with the pins of the chip connected will do. If anyone has one, please add QQ: 332820439....
[align=left]Reposted from: deyisupport[/align] [align=left]Author: George10687[/align][align=left]I still remember the first time I saw a PMBus demonstration. About 8 years ago, I was on a business tr...
What will happen if I call up(&sem) twice on the same semaphore? As the title says, I started with a down(&sem); and due to an error during the release, I called up(&sem); twice. What will happen?...
The pictures are the back, the camera part, and the two sides of the PCB board. The text on the back is written before and will not be modified. WIFI doorbell (tentative name) Origin: Shenzhen? Functi...
STM32F1 is positioned as a single-chip microcomputer, but is STM32F4 still positioned as a single-chip microcomputer? ? With so many powerful functional modules, it is only lacking in MMU (memory mana...
Traditional broadcasting systems generally need to be operated manually at a fixed time, and can only realize one-way broadcasting with few functions. Traditional bell ringing equipment has a singl...[Details]
With the rapid development of science and technology, especially the widespread application of digital technology and various ultra-large-scale integrated circuits, electronic equipment, especially...[Details]
1 Introduction
The high temperature tester is mainly used for temperature tracking measurement and data acquisition during the heating process. By systematically analyzing the test data, the...[Details]
1. Circuit composition
The whole circuit consists of two parts:
1. Power saving control circuit
As shown in the figure below. Including delay circuit and drive circuit.
(1) Delay ci...[Details]
1. Introduction
With the growth of parking demand, the scale of parking lots is becoming larger and larger. A lot of research has been done on intelligent parking lots in China, but most of th...[Details]
Remote keyless entry (RKE) systems have become popular with users, with more than 80% of new cars in North America and more than 70% in Europe equipped with RKE systems. In addition to the obvious ...[Details]
Analog engineers have traditionally struggled with complexity when designing power supplies that required multiple outputs, dynamic load sharing, hot-swap, or extensive fault-handling capabilities....[Details]
Converged processors meet scalability requirements
In current embedded system design, solutions based on MCU, DSP, FPGA and ASIC account for more than 90% of the market share. These solutions ...[Details]
The reason for the light decay of white LEDs: the decline of phosphor performance
So far, the rapid decline of the luminous performance of white light LEDs, especially low-power white light LE...[Details]
1. Background:
The instrument system parameter detection and control of the chemical production workshop of Tangshan Coal Gas Coking Plant are all analog instruments, some of which are eve...[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]
The concept of state machine
State machine is an important concept in software programming. More important than this concept is its flexible application. In a clear and efficient program, ther...[Details]
introduction
MAX6636 is a multi-channel precision temperature monitor that can not only monitor local temperature, but also connect up to 6 diodes externally. Each channel has a programmable...[Details]
In today's body control module (BCM) designs, savvy engineers are moving away from electromechanical relays whenever possible. Their next step is to eliminate fuses. But is eliminating fuses a nece...[Details]