I want to use an 8155 to expand the IO port, so that port A can be used as a bidirectional IO port, and ports B and C can only output. It works in the simplest mode. I don't know how to initialize it....
[i=s]This post was last edited by jinghong21 on 2015-3-26 11:12[/i] [size=4][size=5]This code is a very simple code for initializing an external interrupt. I compared the firmware function library, bu...
There are 64 signals in the FPGA that are converted into one output. The sampling rate of each channel is 37.5MHz (there is no bit width information yet, so we can assume that the input and output are...
Abstract: This article introduces the problems that may arise when multiple power modules are used in parallel and their solutions. Keywords: power modules parallel operation current sharing The rap...
1 Introduction
Building Automation System (BAS) is a distributed monitoring system (DCS) designed according to distributed information and control theory. It is the result of the mutual de...[Details]
1 Introduction
With the development of control, computer, communication, network technology, etc., a new control technology, namely fieldbus, has emerged in the field of industrial control...[Details]
1 Introduction
There have been many studies on the detection and protection of power grid short circuit and line fault. The short circuit, overload and overvoltage protectors on the market have ...[Details]
The concept of state machine
State machine is an important concept in software programming. More important than this concept is its flexible application. In a clear and efficient program, ther...[Details]
Single-chip microcomputers are widely used because of their small size, powerful functions and low price. This article introduces the method of designing a micro electronic piano using the AT89C51 sin...[Details]
With the rapid development of the national economy, lifting and hoisting operations are used more and more frequently and widely in various fields of economic construction. China has continuously expl...[Details]
Currently, high-frequency and high-efficiency DCDC converters are increasingly used in automotive electronic systems.
High switching frequency can use smaller power inductors and output filter...[Details]
IntroductionLED
billboards are a kind of information display terminal for the public, which has a wide range of civil and commercial values. However, the information displayed on most LED bil...[Details]
1 Introduction
With the development of computer technology and information technology in the world, the global information age has arrived. All countries are formulating their own development p...[Details]
introduction
The Steyr diesel engine produced by Weifang Diesel Engine Factory has huge power and is one of the main power models widely used in China's heavy machinery and large trucks. In ...[Details]
Today's automotive application developers face numerous design challenges as modern cars add more electronic functionality, while the need for lower power consumption and smaller printed circuit bo...[Details]
Various electronic and electromagnetic interference inside and outside the car often puts automotive electronic equipment in dangerous working conditions, degrading the performance of electronic eq...[Details]
Introduction
Zero-IF receivers are not new; they have been in use for some time, with cellular handsets being a key application area. However, their use in high-performance receivers such as...[Details]
introduction
This paper mainly studies the problem of voltage sag control. For sensitive load equipment with rectifier inverter structure, this paper proposes a DC dynamic voltage restorer (Dy...[Details]
0 Introduction
The traditional measurement method of measuring gravity acceleration by a simple pendulum in university physics experiments generally uses a mechanical stopwatch for manual timing and...[Details]
Power technology
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