[font=宋体]I want to use AT89C51 microcontroller to control the actuators of a mirror frame scanner. There are five actuators. L298 is used to drive two micro DC motors and ULN2803 is used to drive thre...
IOPC4---WP; IOPC3---SDA; IOPC2---SCL; I adapted this from Liu Heping's book, and I feel there are mistakes in his book too! The following is to send only the data 0X05, and then read the data, but the...
I heard that the board has been sent out, but I haven't received it yet. I guess I can get it tomorrow. It doesn't matter. I've been busy with other things recently, and the preparation for PSoC4 has ...
[font=微软雅黑]The string DAC, sometimes called a Kelvin divider or Kelvin-Varley divider (named after its inventor), is one of the most straightforward approaches to DAC design. The simplest string DAC i...
When searching, if you enter the wrong keyword, or you think the keyword is not good after taking a look at the results, you have to wait 10 seconds after slightly changing it. If you don’t find the r...
I have just come into contact with PCI9656 (working in C mode). I have never been exposed to drivers before, so I also use the 9054 driver (I checked the registers and they don't need to be changed). ...
Traditional broadcasting systems generally need to be operated manually at a fixed time, and can only realize one-way broadcasting with few functions. Traditional bell ringing equipment has a singl...[Details]
In early 2002, I started to write a working program for an IC card prepaid electricity meter. The meter used Philips' 8-bit 51-expanded single-chip microcomputer
87LPC764
, and wa...[Details]
1 Introduction
The high temperature tester is mainly used for temperature tracking measurement and data acquisition during the heating process. By systematically analyzing the test data, the...[Details]
1. Circuit composition
The whole circuit consists of two parts:
1. Power saving control circuit
As shown in the figure below. Including delay circuit and drive circuit.
(1) Delay ci...[Details]
1. Introduction
With the growth of parking demand, the scale of parking lots is becoming larger and larger. A lot of research has been done on intelligent parking lots in China, but most of th...[Details]
Converged processors meet scalability requirements
In current embedded system design, solutions based on MCU, DSP, FPGA and ASIC account for more than 90% of the market share. These solutions ...[Details]
Due to the significant increase in electronic devices in automotive and industrial applications, the automotive and industrial markets continue to play an important role in China's electronics in...[Details]
Images in science fiction movies often break through the limits of reality, such as in the movie "Minority Report." Tom Cruise uses a multi-touch screen to browse information. Capacitive sensing te...[Details]
Xiaomi, a well-known Internet phone in mainland China, won a million-unit order contract from China Unicom on November 20 last year, which made Xiaomi famous in mainland China. In April this year...[Details]
LED lamps and bulbs are now rapidly replacing incandescent, halogen and CFL (compact fluorescent lamp) light sources in many general lighting applications. Flyback DC/DC converters are the power su...[Details]
Today, with energy becoming increasingly scarce, the utilization of natural energy has become the focus of people's attention. Among various natural energies, the endless solar energy is highly fav...[Details]
Introduction
In industrial control, speed measurement is often required. Generally, a contact tachometer is used. This tachometer must be placed against the center of the shaft to measure. It...[Details]
At present, how various communication technologies will evolve after 3G is a focus of great concern in the industry. Especially for TD-SCDMA, whether it can achieve smooth evolution to the next gen...[Details]
1 Introduction to LED
With the development of science and technology, people have higher and higher requirements on automobile light sources. LED (Light Emitting Diode) has gradually attracted...[Details]
Every time I go home and walk up the stairs, I am always scared. The corridor lights are often broken, and no one changes the bulbs, or they are not smart enough and need to be operated manually. E...[Details]
51mcu
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