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The parallel port only costs a few yuan. Use a small multi-purpose board to solder one.Don’t underestimate this circuit because it is very simple. It is actually very stable in use.The burning procedu...
Use 8031, keyboard, 6-digit LED display, ADC0809 to form a system function, send the analog quantity to 8031 microcontroller through A/D conversion, and display it on 6-digit LED. Requirements: 1. Giv...
[i=s]This post was last edited by paulhyde on 2014-9-15 09:14[/i] :victory: I went to Freescale to have a look during the summer vacation. I was lucky enough to go deep into the core area, the Freesca...
[i=s]This post was last edited by paulhyde on 2014-9-15 09:13[/i] I was completely decadent during the three days of New Year's Day. I just played and slept. I went to work right away. I haven't done ...
[code]
void timer1()
{TIMSK=(1[/code] [code]void fre_pwm(int i,int b) { DDRD |=(14); // OC1B pin is set to output DDRD |=(15); // OC1A pin is set to output TCCR1A=(0com1a1)|(1com1a0)|(1com1b1)|(0com1b...
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]
Sailing is gaining more and more attention. How to use modern technology to assist training and improve competition results is particularly important. Considering the real-time data collection in t...[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]
This article discusses how to wake up a touch-sensitive device such as a tablet without touching the device, using basic gesture recognition and novel proximity sensors. The article discusses the p...[Details]
China's new energy vehicles are in a transition period from research and development to real industrial development. In 2012, with the intensive launch of new energy vehicle policy planning, the de...[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]
In public places such as schools, government agencies, factories and mines, as well as public corridors in residential areas, the phenomenon of long-burning lights is very common, which causes a h...[Details]
With the advocacy and implementation of the government's Safe City Plan, the security market has increasingly higher requirements for the clarity of surveillance images. Imagine that after a case o...[Details]
LED lighting: Basic circuit design can be completed in as little as one day
Semiconductor manufacturers are also getting involved in the LED lighting business. The power circuit of LED req...[Details]
Since the late 1990s, with the demand for higher system efficiency and lower power consumption, the technological update of telecommunications and data communication equipment has promoted the deve...[Details]
The ARINC429 bus is one of the most commonly used communication buses between various subsystems of avionics. As the "skeleton" of modern avionics systems, once the bus system or the attached airbo...[Details]
Rated capacity refers to the maximum output power of the UPS (the product of voltage V and current A).
Usually, the UPS power supplies sold on the market are marked with "W" (watt) for smaller...[Details]
The overall operating performance of an electric car depends first on its battery system and motor drive system. The drive system of an electric car is generally composed of three main parts: a con...[Details]
1 Introduction
Lijia'an Yellow River Diversion Culvert is a large gravity diversion gate in the lower reaches of the Yellow River. The Yellow River Diversion Culvert is located in Lijia'an Vi...[Details]