The laptop has no serial port. I tried several USB download programs but none of them worked. I can't see the COM port in the device manager. I can't select the COM port when I use STC to download pro...
1. The scope of statistical evaluation of relay protection operation of power system is: 1..1 Generators, phase regulators, transformers, busbars, reactors, motors, capacitors, lines (including cables...
[i=s] This post was last edited by paulhyde on 2014-9-15 09:16 [/i] :) :) :) Typical control scheme design of phase-locked loop, hehe [[i] This post was last edited by xiaoxiaoha on 2009-8-17 15:55 [/...
The ECG acquisition board I drew has no problem with simulation, but the waveform is not right at all. Because I don't have an oscilloscope, I can only use a computer. ont][/size][/color][color=#33333...
[i=s]This post was last edited by Hot Ximixiu on 2020-11-3 22:06[/i]The MCU source program is as follows://**********************************************************************************// Author:w...
How to write the delay function for precise delay under Xilinx Nexys3 board Microblaze? For example, how to write delay_us() and delay_ms() functions when the system clock is 50M or 100M?...
In
circuit design,
current
measurement
is widely used, and the main fields are divided into three categories: in measurement,
the electric meter
is used to measure the curre...[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]
In recent years, the market for mobile/portable devices such as smartphones and laptops has continued to grow rapidly. While these products continue to integrate more new features to enhance the ...[Details]
1. Introduction
Light control circuit plays a vital role in urban street lamps or corridor lighting. With light control circuit, the lights can be automatically turned on and off according to ...[Details]
This paper designs a dot matrix LED text display screen that is easy to update, expandable, and low-cost. The way to reduce costs is
① Use the Bluetooth data transmission function of mobile ph...[Details]
With the rapid development of urban economy, elevators are increasingly used as a vertical transportation tool. However, elevator fault detection and maintenance, especially the role of elevator remot...[Details]
PV inverter manufacturer SMA has launched its first DC arc fault circuit interrupter (AFCI) PV inverter and has received UL certification.
The new SunnyBoy AFCI inverter models include 3000-US...[Details]
LED is the abbreviation of light emitting diode, which is an electric light source made of semiconductor technology. The core part of LED is a chip composed of P-type semiconductor and N-type semi...[Details]
With the rapid development of intelligent control technology, computers and information technology, the trend of information appliances IA (Information Application), computers and communications integ...[Details]
Experimental tasks
A DS18B20 is used to form a temperature measurement system. The temperature measurement accuracy reaches 0.1 degrees. The temperature range is between -20 degrees and +50 de...[Details]
It is well known to automotive suppliers that automakers are demanding more from their supply base. For connector suppliers, this means stricter requirements for product performance, stability and ...[Details]
In 2012, more than half of the cars in the European, Japanese and American car markets will be equipped with color displays, navigation systems, satellite communications and other in-vehicle infota...[Details]
At present, the traffic congestion in cities is quite serious. According to relevant news reports: In China, the traffic congestion has expanded from megacities such as Beijing, Shanghai, and Guangzho...[Details]
Spatial Division Multiplexing (SDM) MIMO processing can significantly improve spectrum efficiency and thus greatly increase the capacity of wireless communication systems. Spatial Division Multip...[Details]
The era of mobile access to the Internet has arrived, and it will rapidly change the business and infrastructure needs of mobile operators under a whole new trend of requirements. We need 4G LTE to...[Details]