I just started learning ARM embedded system recently, and I have some questions about expansion: I want to expand SDRAM, NOR FLASH, and NAND FLASH. The A1-A (x) address lines of ARM are connected to t...
AT&T recently announced the implementation of the AirGig plan, which aims to use existing power transmission lines to transmit high-speed wireless communication data without the need to build new comm...
Preface: I got the board at 10:30 am on Sunday. I should have come to the forum to tell Sister Soso and express my excitement, but the school's network server is too weak. I have been unable to connec...
Recently, I found in an experiment that when the VSS pin of ad7710 is connected to -5V to collect positive and negative voltages, the reading is very unstable, with a jump of about 5 millivolts. When ...
The microcontroller source program is as follows (with detailed comments): #include
#include
#include18b20.h #define uchar unsigned char #define uint unsigned int bit flag1s = 0; //1s timing flag unsi...
The components on the PCB need a 3.3V power supply, but the space needs to be compressed as much as possible. I want to replace the two No. 5 batteries with button batteries, but I have never used but...
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]
There are three types of mobile TV: one is based on analog TV broadcasting network, another is based on mobile communication network, and the other is based on digital broadcasting network. The f...[Details]
I. Introduction
In the field of power conversion, isolated converters (forward, flyback, and double-ended) with low output DC voltage all use MOSFET as the rectifier device. Since these devi...[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]
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. System Structure
This system is a simulation system of indoor air-conditioning temperature/humidity control system. The data acquisition and control center collects temperature/humidity...[Details]
Toyohashi University of Technology demonstrated electric field coupled wireless power supply technology using life-size car tires and roads at the wireless technology exhibition "Wireless Technolog...[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]
Investment in
the
medical device
industry has been on the rise in recent years. In the past two years, venture capital for medical devices has almost doubled, reaching $4 billion in 2007. Fr...[Details]
1. When the slip speed regulating motor is undergoing frequency conversion and energy saving transformation, the original excitation box (referred to as the speed regulating box) and the original s...[Details]
Recently, news came from the certification department that the photovoltaic grid-connected inverter of Samil New Energy Co., Ltd. (hereinafter referred to as "Samil New Energy") has once again obta...[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]
Against the backdrop of global warming, energy conservation and emission reduction have become a global hotspot and focus, which has also sounded the clarion call for the take-off of the LED lighti...[Details]
Embedded System
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