Dear seniors, I have just come into contact with 430 and GPRS modules. Now I have a problem. I receive the command sent by the computer through 430 serial port 1 and then send it to SIM900A through se...
I have found a lot of information online, but I don't understand a lot of it. Some parameter settings are complicated, and there are many differences in versions and methods. Every time I compile, the...
In wince application development, when I click on stop acquisition and the picture is still, my drawing interface will have white blocks appear when I right-click the interface for more than 1 second....
1. Radar sensor principle:
Before development, let’s get familiar with the basic principles:Doppler radar:Doppler radar is a type of radar that uses the Doppler effect to detect the position and relat...
First of all, to drive the screen, you need to understand the most basic IO register configuration. Now I will introduce some basic GPIO operations that need to be configured registers: ADE/SPSR regis...
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]
No matter which processor you are learning, the first thing you need to understand is the registers and working mode of the processor.
ARM has 37 registers, including 31 general registers and ...[Details]
0 Introduction
With the development of society, people pay more and more attention to security work. Monitoring products have been used in various fields instead of being used only in importan...[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]
0 Introduction
High-precision current source can provide high-precision current supply for precision instruments, and is suitable for automatic measurement tasks of various resistors in semico...[Details]
1 What is an LED floodlight?
LED downlights are also called spotlights, projection lamps, and spotlights. They are mainly used for architectural decorative lighting and commercial space lighti...[Details]
Direct digital frequency synthesis (DDS) has fast frequency switching and modulation capabilities and is widely used. However, when low power consumption and low cost are the main considerations, D...[Details]
1 Introduction
With the rapid development of my country's economy, the country has introduced a series of policies such as preferential policies, subsidy policies, and old-for-new policies, wh...[Details]
As a type of iron battery, lithium iron phosphate battery (hereinafter referred to as lithium iron battery) has always been widely concerned by industry friends (some people say that lithium iron b...[Details]
1. Sensor
According to the national standard GB7665-87, a sensor is defined as a device that can sense the specified measured quantity and convert it into a usable output signal according to a...[Details]
illustrate]
This method has
the characteristics of small
ROM
occupation
and fast operation speed, with a range of
2000
ßà
2099
,
a total of
...[Details]
In recent years, the rapid development of high-performance digital signal processing chip DSP (Digital Signal Process) technology has made it possible to realize real-time speech recognition. Amo...[Details]
Abstract Aiming at the harm caused by mobile phone microwave radiation to human body and the incompatibility between mobile communication network and fixed-line network, a PSTN voice gateway using ...[Details]
Electrolyte is one of the core materials that constitute the capacity of lithium secondary batteries and lithium primary batteries that are the energy sources of mobile phones, notebooks, video rec...[Details]
Microcontroller MCU
京公网安备 11010802033920号
EEWORLD
