Using the internal reference voltage as a benchmark, the voltage value on the AREF pin is 2.7 volts. Is it inaccurate? Do AVR microcontrollers need to introduce an external reference voltage?...
I have found that when STM32 is started, before entering the main function, it enters a systemInit function to initialize the clock frequency. Is there any difference between this function and the RCC...
The crystal pins are black because of improper storage and oxidation. We can see that there are some black spots on the metal surface. The black spots are the result of rust caused by the metal parts ...
I have worked for two years and can basically use MSP430, LPC1768, LPC1343 microcontrollers proficiently, and can use PROTEL to draw schematics and PCB. I am now in Nanjing studying for a first year o...
[i=s]This post was last edited by dontium on 2014-7-10 11:56[/i] First, the pictures:Picture (board) description: The board is a DSP image processing board, 5V power supply, with JTAG interface positi...
[font=宋体]I was bored today, so I attended an event online. Feng Xiaogang's movie Big Shot happened to be playing on TV, so I adapted a line from it, which is about a notebook. I wrote it down to make ...
As a wireless broadband metropolitan area network standard, WiMAX technology has greater advantages than previous 3.5GHz MMDS products in terms of non-line-of-sight transmission and spectrum utiliz...[Details]
Today, with the increasing integration of functions, mobile phones can also be used as portable media players (PMP), digital cameras, handheld computers (PDAs), and even global positioning systems ...[Details]
introduction
Throughout the history of automotive lighting, power has always played an important role. Initially, cars only needed headlights to see the road in the dark. Later, other light so...[Details]
In public places such as schools, government agencies, factories and mines, as well as public corridors in residential areas, the phenomenon of long-burning lights is very common, which causes a h...[Details]
Instrument stepper motor
The stepper motor is an open-loop control element that converts electrical pulse signals into angular displacement or linear displacement. In the case of non...[Details]
A standard cell
is an electrochemical
cell
used as a voltage reference standard in many electrical standards laboratories
. If properly maintained, standard cells are very stable. The ...[Details]
I've been studying dot matrix recently. It looks simple, but it takes a while to master it completely! The 8*8 dot matrix hardware circuit I'm making now is like this. The row is driven by 74HC138 + t...[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]
Since the late 1990s, with the demand for higher system efficiency and lower power consumption, the technological update of telecommunications and data communication equipment has promoted the deve...[Details]
introduction
At present, measuring instruments are developing towards networking, and each individual embedded instrument will become a node on the Internet. This system realizes the network...[Details]
Analysis of the three core aspects of digital TV transmission standards
According to the differences in regionality, transmission method and modulation method, the transmission method needs to...[Details]
introduction
When it comes to the production of mobile phone lithium-ion batteries, the first thing that comes to mind is Japan's industrialized mechanical assembly line, NOKIO, MOTOLROLA's st...[Details]
Rated capacity refers to the maximum output power of the UPS (the product of voltage V and current A).
Usually, the UPS power supplies sold on the market are marked with "W" (watt) for smaller...[Details]
Designing low power circuits while achieving acceptable performance is a difficult task. Doing so in
the RF
bands increases the challenge dramatically. Today, nearly everything has wireless...[Details]
1. Introduction
AS-Interface bus technology is an intelligent network that uses a single cable to connect sensors and actuators to controllers, transmit data, and provide power. It can be used...[Details]
Microchip MCU
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