Why can't I draw a manual wiring to another pad or cross it? When doing automatic layout, the flying wire of the transistor's 3rd pin has not been changed to the corresponding 123?...
Reprinted from deyisupport [align=left][color=#000]In January 1979, Electronic Test published an article stating that a single test circuit could "perform all the standard DC tests required to thoroug...
My test board uses pxa270 as the main chip, which requires a 13M and a 32.768K crystal oscillator. The current situation is that the two crystal oscillators have no waveform output. There is no proble...
A fan remote control circuit, the power supply is 4.7V, the control part uses MD2722PB. The fan starts as soon as the power is turned on, and there is no response when it is manually or strictly contr...
The radio frequency identification (RFID) market is experiencing strong growth, with sales reaching $1.7 billion in 2004 and expected to reach $5.9 billion in 2008. This surge in demand is driven b...[Details]
This article discusses how to use an ultra-low-power RF transceiver chip from Zarlink Semiconductor for pacemakers, neurostimulators, drug pumps, and other such implantable medical devices t...[Details]
Emulation Features
Emulation provides a set of standard operations for integration and debugging. Some of its main features are as follows:
BreakpointsA
common feature of emulatio...[Details]
Portable devices with audio functions (such as portable media players and multimedia mobile phones) require long audio playback time, that is, long battery life. To extend the battery life of port...[Details]
TMS320C62X is a new generation of high-performance fixed-point digital signal processor (
DSP
) chip
from Texas Instruments (
TI
). The software design problem based on
DSP
is to use...[Details]
1. Introduction
Rolling bearings are the most widely used general mechanical components in various rotating machines. Whether their operating status is normal often directly affects the perfo...[Details]
With the rapid development of my country's power industry, the power system has higher requirements for the collection of power generation, transmission, distribution and consumption. As a prerequis...[Details]
Introduction
As a kind of biometric identification, fingerprint recognition has incomparable advantages in identity recognition over other means: human fingerprints are unique and stable; wit...[Details]
From a broad perspective, the development of digital television in my country started in 1995 with a special project on digital television science and technology. In 1998, China's first and the wo...[Details]
In today's era of pursuit of enjoyment, car drivers have higher and higher requirements for car audio. BMW and Mercedes-Benz, the world's automotive trend leaders, have recently put forward new requir...[Details]
The teardown of the third-generation iPhone shows that the phone is more integrated and may cost less, in part because of the use of chips from Broadcom and Toshiba. One analyst joked that the "S" ...[Details]
0 Introduction
With the release of the "Elevator Supervision and Inspection Regulations", new requirements have been put forward for the inspection quality of elevators by inspection agenc...[Details]
In view of the fact that a single ordinary type of fire detection alarm can no longer meet the demand, the use of multiple sensors to comprehensively collect various abnormal information before a f...[Details]
O Introduction
Semiconductor laser (LD) is a solid light source. It has been widely used due to its advantages such as good monochromaticity, small size, light weight, low price and low po...[Details]
With the popularity of Apple iPhone and Nintendo Wii game consoles, accelerometers have been widely used in consumer electronic devices. For example, drop protection in notebooks, automatic screen ...[Details]
PCB Design
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