2020年05月14日
Stranded copper wire and integrated circuit
Dismantling integrated circuits with multiple strands of copper wire
Remove the plastic sheath of the multi-strand copper core wire, place the wire in rosin and heat it with an electric soldering iron, so that the wire is stained with rosin. put multiple strands of copper core wire on the pins of the integrated block and heat them with an electric soldering iron, so that the solder on the pins will be absorbed by the copper wire stained with rosin. Suck all the solder on the pins of the integrated circuit, and then gently pry off the integrated circuit with tweezers or a small flat-blade screwdriver.
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Adding lead solder melting disassembly, this disassembly method does not require the use of other tool materials, and is particularly suitable for dismantling single-row or double-row ICs with a small number of pins.
The operation process of disassembling the integrated circuit by adding pin solder to melt is as follows: during disassembly, first add some solder to a row of pins of the integrated circuit, let the solder connect all the solder joints of the row of pins, and then heat it with an electric soldering iron Move the middle pins of the column to both ends, use the heat conduction of the solder to melt the solder on all the pins of the column, and then use tweezers or a small flat-blade screwdriver to deflect the IC slightly to the position of the column. Then use the same method to heat and pry the other row of pins, and alternately heat the two rows of pins until they are removed. Under normal circumstances, each column of pins can be removed by heating twice.
The hot air desoldering station or hot air gun is used for disassembly. The hot air desoldering station or hot air gun has a nozzle that can eject hot air with a temperature of several Baidu. The hot air is used to melt the solder on each pin of the integrated circuit, and then the integration can be removed Circuit.
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2020年05月08日
The impact of COVID-19 on the semiconductor market
The US stock market is still trying to understand the global coronavirus pandemic, which lost nearly 20% of its value in a week. The cooling-off period (also called "circuit breaker") automatically stops overheated transactions at different intervals.
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The market index fell sharply. The index shows the relative performance of the Dow Jones Industrial Index and the Nasdaq in the first half of this year. Since that date, this has been a roller coaster, the market rose sharply last week, and this week began to fall again.
In this era of financial uncertainty, what does this mean for the chip market?
Because The Memory Guy is a trained engineer, I cannot easily explain what is happening in the global economy, but my background as an analyst in the semiconductor industry has made me clear what is most likely to happen in the chip market. In this article, my purpose is to provide an extremely brief version of the story I am telling my clients in detail. Since the market repeats the same cycle regularly, when forecasting semiconductors.
The idea that I will explain below is the fact that led to objective analysis of semiconductor predictions that have been the most consistent predictions in the industry for the past 13 years. We highlight this fact by sharing the annual forecast video on the pages of our website.
There is a very close relationship between memory revenue growth and overall semiconductor revenue growth. These points show the relationship between the annual increase in memory revenue and the growth in total semiconductor revenue during 1974-2018. Except for six years in the 1980s, all scores fell within the range outlined by the sphere. This relationship simplifies the task of creating semiconductor predictions. Memory is the more volatile part of the semiconductor market: if you know what memory might do, then you can predict semiconductor revenue.
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2020年05月04日
Will charging the entire night damage the cell phone battery
Will charging the entire night damage the cell phone battery
Charging before bed is a guarantee for normal use of the phone during the day. If the phone is not fully charged, it seems that there is no sense of security when going out.
This question has two doubts: first, is it safe? Because many media reported that the overnight charging of mobile phones caused explosions, fires and other incidents; second, charging overnight, will it shorten the life of mobile phone batteries?
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Is it harmful to charge the phone all night?
Under normal circumstances, there is no harm in charging the phone overnight. Because, now mobile phones come with pMU, power management unit. When your phone is fully charged, the pMU will give a signal to power off, if you do not disconnect the power, it will enter the standby state.
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When the mobile phone's power is slightly consumed, the pMU will charge the mobile phone again, but this time the charging is using low current charging; this way the cycle charging is not harmful to the mobile phone battery, nor will it cause problems such as explosion and fire of the mobile phone. The overnight charge mentioned here is to use the original charger and battery of a regular manufacturer, or a trusted third-party charger. If you change it at will or purchase it at a roadside stall, the safety cannot be guaranteed.
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Will charging overnight reduce battery life?
Now mobile phones use lithium batteries, and the loss of battery life under normal circumstances is very slight when charging overnight.
Moreover, the mobile phone will automatically power off when it is fully charged, which will avoid overloading. So there is no need to worry that charging overnight will shorten the life of the battery, and you do n’t have to wake up in the middle of the night to unplug the charger, you can sleep peacefully.
Conditions that can shorten the battery life are: playing games while charging, making calls, watching TV, or performing other operations. In addition, the use of inferior chargers will also affect battery life.
When the mobile phone is used under heavy load, the mobile phone itself generates heat, and the heat generated by the battery during charging will cause the overall temperature of the mobile phone to rise, and high temperature is the biggest killer of lithium battery aging.
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2020年04月24日
What is the common network security of enterprises
What are the most common network security issues for enterprises
What are the most common problems encountered by enterprise network security? Almost every enterprise IT environment may find the following threats:
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Viruses in email
Not only can security checks monitor user traffic, it can also help companies check all email. Enterprises can do more than just filter spam, but also check attachments and links in the body of the message. This control is easy to implement. Simply configure the mail server to forward all copies of email to Check point where the MTA is running. If you are using the Exchange enterprise email service, you can use Bcc (Bcc). The main benefit of this method is that the enterprise checks the email after the user's anti-spam solution is filtered. However, it is strange that malicious emails are constantly passed. The current mechanism of email traffic security is simply unable to cope with such tasks in most cases.
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Why is email virus dangerous?
Email continues to dominate the malware distribution ecosystem. Malicious code can be checked as an attachment file or polled through links to random online resources. In terms of virus transmission, SMTp traffic is superior to other protocols. In addition, viruses are not necessarily .exe files, they can also be disguised as .doc or .pdf documents that users usually trust.
phishing
Almost all evaluations will find instances where employees click on phishing links to encounter attacks. paypai, Office 356, Fasebook, Appie and other sites have countless phishing links, trying to attract users. The vectors of phishing attacks are rising sharply. The reason is very simple: if you can simply deceive a credulous user, why create a complex virus? Humans are always the weakest link in corporate network security.
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2020年03月06日
Computer software for hardening system operations
This has the benefit of being cost-effective and an alternative that could be implemented fairly speedily. It entails the development of rules/policies to prevent users from installing any non-approved program on their devices.
the creation of ‘gold-standard’ for servers and network dependent tools, and scalable manner where to introduce new machines to the network.
Even so, some downsides consist of the danger that reputable programs that it's unaware of may break, and it destinations the load of routine maintenance to the again of IT. Along with the proliferation of ‘shadow IT’ the place people apply a few of their very own instruments for genuine company capabilities.
helps to minimise impact of IT breach by cyber .
it can be very difficult to establish what enterprise processes could be impacted. Even more, many tools are cloud native and it's seemingly complicated for IT administrators to control who has use of what (cloud) procedure and what details sharing looks like. It can even have unforeseen consequences for in-house program, or other application with dependencies you weren’t conscious of. Examine out my write-up on SRp for additional on this one particular.
offers solutions to bridge the app-data gap.
As you can see, every single path has its execs and cons, and there's not necessarily any one apparent winning tactic.overseas university, The solution invariably lies in the mix of techniques, coupled with far more innovative detection and response capabilities.
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2020年02月10日
Use Headers to break Up Textual content
A scannable write-up can be a readable post, as well as a readable write-up is one that’s far more prone to accomplish effectively during the look for engines.
Scannability is so crucial that you the success of the write-up, that publications like Forbes have gone so far to connect with it “the most overlooked issue of content material promoting.”
The data backs up these statements. Only 16% of internet end users examine an write-up word-for-word. The rest are scanning.
persons simply just like scannable material. In accordance on the similar analysis, an article that is scannable is 58% extra very likely to complete far better with readers.
When an short article is scannable, customers might basically stick around to browse it, instead of bouncing back to Google. As well as, they’ll even be a lot more more likely to share it with their pals.
Though social alerts aren’t a immediate position element, the greater an article is shared, the more probable it really is to the natural way earn backlinks, that happen to be a position aspect.
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