/************************************************************************ * * Method to connect the upper four bits of LCD1602 display * * Description: 4-line data width, operate Lcd1602 * Display Hel...
Specifically, P1.4 sends a high level, allowing P1.2 and P1.7 to collect the voltage. In order to save power, this high level can only be maintained for 16 microseconds. I now find that if P1.4 is alw...
[i=s]This post was last edited by paulhyde on 2014-9-15 04:06[/i] Here is a list of components from previous years, which may help you analyze this year's competition questions!...
Due to the changes in system memory, the memory allocation needs to be modified in the BSP. The CPU used is MPC8270, and the memory controller corresponds to 12 banks CS0-CS11. Now the space correspon...
SAMR21 LED and Key There is a user key and a user LED light in the SAMR21 Xplained Pro development board. The hardware connection diagram is as follows: Figure 4-1: LED&KEY circuit diagram You can see...
The 485 bus of stm32 uses interrupts to send and receive. It can send and receive, but a byte (00 or CD) is inserted in the received byte. What's going on? Can anyone give me some advice? ?...
1. Overview
Will passive devices
produce nonlinear intermodulation distortion? The answer is yes! Although there is no systematic theoretical analysis, it has been found in engineerin...[Details]
When the WDP500-2A plane grating monochromator is used to test the emission wavelength of a high-power laser diode at different currents, the matching of the laser diode has the disadvantages of lo...[Details]
1. Introduction
Since the 1980s, with the continuous development of automotive electronic technology, there are more and more electronic control units in automobiles, such as electronic fuel i...[Details]
introduction
In the discharge process of tokamak plasma physics, the study of rupture and sawtooth is of great significance. Rupture and sawtooth exist in most tokamaks. Rupture is a notew...[Details]
Product series: PB-B-RS232/485 interface (hereinafter sometimes referred to as "interface") is a product in the PROFIBUS bus bridge series.
The main purpose of the bridge series ...[Details]
0 Introduction
With the rise and continuous improvement of the solid-state lighting industry, light-emitting diodes (LEDs) have become an alternative lighting technology and are gr...[Details]
Capacitance Measurement
Used to verify that capacitors meet the manufacturer's specifications. For quality control, a group of capacitors may be placed in an environmental chamber and the cap...[Details]
Introduction
Automakers are working to reduce vehicle weight to reduce CO2 emissions and improve fuel efficiency. Designers are therefore seeking new technologies and design techniques that can...[Details]
hint:
The number of speakers and their spacing limit the sound field of a portable stereo system.
Spatial audio attempts to artificially recreate the experience of listening to sounds i...[Details]
1 Basic Features
In computer control systems and various intelligent instruments and meters composed of single-chip microcomputers (or microprocessors), various external analog signals must be ...[Details]
0 Introduction
There are many types of sensors, and the working principles, measurement targets and measurement environments of different types of sensors vary greatly. The corresponding detection s...[Details]
1 Embedded Systems
Embedded System refers to a collection of computer hardware and software with specific functions or purposes, which is divided into embedded software system and embe...[Details]
The invention of the steam engine ushered in the first conversion of internal energy and mechanical energy for mankind, and the birth of the internal combustion engine at the end of the 19th centur...[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]
The demand for improved healthcare environments is endless, so medical imaging equipment with higher resolution is needed to better observe the human body. High resolution brings problems with sign...[Details]
Microcontroller MCU
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