'Peeling' 8 facts about digital technology

Sometimes we get advice or questions but there is no answer? Here are 8 facts about technology products.

While using computers and technology products, not every advice is right and any advice must follow. Here are the experiences provided by Ismael Matos , a technology expert from the CNet news site, to help people answer questions that may be encountered.

Should wait 15 seconds before restarting the computer

Users often have the habit of closing all open applications, then immediately restarting the computer. However, this habit is sometimes harmful to the condition of the hard disk.

Accordingly, when operating, the hard disk will operate at a very fast speed (sometimes up to 10,000 rpm). During use, the hard drive will access data continuously. Therefore, you should turn off all applications, and wait for a short time when you need to restart your computer.

At the advice of a technology expert, 15 seconds is a good time. Or you can monitor the hard drive indicator on your computer to see if the computer is continuing to access data (lights that blink or blink continuously mean that the hard drive is accessing data).

Digital cameras - Not a lot of 'dots' as well

When it comes to digital cameras, the first mentioned information is the number of pixels (dots, Megapixels), and according to many people, the more 'dots' the better. And of course, the more 'dots', the more money you have to pay.

However, according to photographer Ken Rockwell, the definition and quality of the image depends on the skill and level of the photographer, more than the resolution parameters of the camera.

According to Rockwell, 'even if there is a difference in the resolution of the camera, there are not many differences that can be seen on the image. For example, images taken from a 3 'dot' camera are similar to images from a 6 'dot' camera even when printing photos with sizes of 12 or 18 inches ' (30-45 cm)

Most high-end users will never know the difference between keeping pictures taken by large and small resolution cameras. Large resolution is only really necessary when you take photos to combine into a big picture or to print photos with extremely large sizes.

So consider the ads and attractive offers of digital camera manufacturers.

The battery must be used up before charging

This is the advice you usually get when using a laptop or mobile phone, especially on the first use on newly purchased products.

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According to the advice of Matos, Cnet technology expert is not only the first use, but also the later use, you must also use this method to extend the life of the battery.

' If you plug in the power while the battery power is still on, the battery will start charging and this will cause the battery to run faster. So it is best to use the battery until it is dry to begin charging . '

However, you should not use the battery as low as 0%, but only 7-10% of the battery, then start charging again. This is the reason that many computer manufacturers have designed laptops to automatically turn off when the battery reaches below 10%.

Use dishwashers to wash . the keyboard is dumped ca-fe

It sounds funny, but this is true.

However, this can only be applied to wired keyboards (directly connected to a computer with a cable, not a wireless keyboard connected by blue-tooth), because wireless keyboard types Battery use and cannot be wet.

Under Matos advice, you should not use soap or hot water.

Continuous on / off does not harm the computer

Many people believe that switching on / off continuously will cause the computer to take a long time to start up, hard drive access, reduce computer life and components. continuous movement, even for several days.

But the truth is not true.

Following the advice of Matos, computers as well as people and need time to rest. So, turn off your computer when you don't need it, or go out or go to bed at night.

Apple Mac computers are not "immune" to viruses and hackers

Windows users have always had a headache with security issues, and the fight against viruses is a complicated and lengthy battle. Meanwhile, Mac fans are always proud that Apple products are always clean, security issues are not a concern.

However, the problem is not that Mac is 'immune' to the virus, but because . the market share of Mac computers is too small compared to Windows. That's why, people often encounter problems, security reports on Windows appear in magazines, tech sites . but rarely encounter security information on the Mac.

In particular, according to security expert Nitesh Dhanjani, the web browser is a vulnerability most often exploited by hackers. Accordingly, Windows' Internet Explorer is always considered to be less secure, while Apple's Safari browser is also considered less secure than IE.

Thus, the idea that using Mac is safe and no longer worried about viruses and hackers are inaccurate opinions.

Internet service providers (ISPs) do not track all user information

There are many Internet users worried that all personal information, all websites visited on the Internet . will be monitored and understood by the provider.

ISP (Internet Service Provider) is the link between your computer and the Internet. Every website visited, every email sent . must go through the ISP's first router. This means that ISPs have the ability to check and save information that users have used on the Internet.

However, the problem is that ISPs do not have enough funding as well as the purpose to store each bit of data by a large number of users. Therefore, ISPs do not track user activities as some people still worry.

Not everything you delete from your hard drive disappears

Do you think that personal and private information stored on the computer, after it is deleted, will be safe and unknown?

The truth is that it is difficult to permanently erase data. When you delete certain data, their presence on the hard drive seems to have disappeared, but the fact that their information is still stored on the hard drive. And the location to store the deleted data will be overwritten with new data. This is how file recovery software still uses to find deleted data.

So how to delete data safely? Use specialized file deletion software like ccleaner to do this.