I want to make a music circuit with 8051. I am a novice and I am in a hurry. I hope an expert can give me some advice to output square waves of 7 frequencies by pressing 7 keys: (I need the circuit sc...
[i=s]This post was last edited by Guadi on 2019-12-27 19:18[/i]This post mainly introduces the implementation and simulation analysis of SVPWM.In motor control, we hope to use a specific spatial magne...
Has anyone used AD7891? The data sheet says that AD7891 can sample up to 500K for one channel, and up to 62.5K for 8 channels. I sample two signals in parallel, but the sampling rate can only reach a ...
In Keil's small mode, constants are placed in ROM and local variables are placed in a fixed memory space? I don't understand this sentence. Does that memory space include R0-R7? Then where are externa...
[i=s]This post was last edited by paulhyde on 2014-9-15 09:01[/i](Medium) Update:(See the attachment for details of 1W2K words)61Electronic2011/07/18
[[i] This post was last edited by 61 Electronics o...
Project Overview
The micro urine analyzer we designed can detect ten parameters of urine, including white blood cells, nitrite, urobilinogen, protein, pH value, occult blood, specific g...[Details]
In today's society, heart disease has seriously affected people's life safety. Many patients with sudden heart attacks are threatened because they cannot get timely treatment. Traditional ECG monito...[Details]
Currently, it is impossible to dynamically obtain patient information in medical monitoring. Once the patient's condition worsens, emergency treatment cannot be implemented in the first place, and the...[Details]
With the rapid development of digital technology, various digital display screens have emerged, including LED, LCD, DLP, etc. There are various control systems for various digital large screens, in...[Details]
1 Introduction
The intelligent meter reading system is a system that reads the data of multiple user meters in a centralized manner through the transmission media by the master station. It...[Details]
1 Introduction
In recent years, with the rapid growth of mobile phones and MP4 video players, it is estimated that the production of mobile phones this year will reach 1 billion units, and...[Details]
Broadband services supporting triple play voice, video and data are evolving for first mile customers (small businesses and homes). A key factor in this FTTx evolution is GPON (Gigabit Passive Opti...[Details]
This article will discuss a common problem in wireless mobile data reception.
Problems facing RF receivers
The common problem faced by RF receivers is that the same hardware must be used ...[Details]
Introduction
The home ECG and blood pressure monitoring system consists of a data acquisition and recording device and a host computer electronic medical record management system. Therefor...[Details]
AD604 is a product of Analog Devices (AD). Compared with similar products, AD604 has the characteristics of ultra-low noise, high precision, continuously adjustable gain, and the decibel (dB...[Details]
With a 31-step dimming range, existing LED drivers offer good dimming capabilities, providing smooth backlight boosting or dimming effects for LCD displays. However, when the end application involv...[Details]
I hope my mobile phone has more functions, I hope my digital camera is smaller, I hope my Walkman can listen longer... Consumers are always full of expectations for the performance of portable electro...[Details]
IntroductionUSB
, serial port, and parallel port are commonly used interfaces for communication between PC and peripherals. However, for images with large data volumes, if the serial RS-232 protoc...[Details]
High-speed serial communication networks are transmitting data and video information at unprecedented speeds. As transmission speeds increase, the evaluation of networks and their components become...[Details]
Preface
Sine wave inverters are widely used in various fields such as electricity, post and telecommunications, communications, and aerospace. Moreover, with the continuous development and...[Details]