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The foreground program processes events through the middle section, and its structure is generally an infinite loop; The background program is in charge of the allocation and management of software and hardware resources and the scheduling of tasks of the entire embedded system, and is a system management scheduler. This is commonly referred to as a front-end and back-office system.
The backgrounder is also called a task-level program, and the foreground program is also called an event-handling program. When the program is running, the background program checks whether each task has the running conditions and completes the corresponding operation through a certain scheduling algorithm. For operations with particularly strict real-time requirements, the interruption is usually completed, only the occurrence of the event is marked in the interrupt service program, the interrupt is exited without doing any work, and the processing of the event is completed by the foreground program after the scheduling of the background program, so that the time-consuming event processing in the interrupt service program will not affect the follow-up and cause other interruptions.
The above is an academic introduction, to put it simply, the background is relative to the desktop, if the desktop is the front desk, we can perceive it when executing. The background is not visible to the user, for example, we want to listen to the **, the foreground operation is that the user clicks on the ** device and selects the song, and the background operation is the system call that the user cannot see, that is, the computer receives the user's instruction to open the ** device and loads the ** device program into the memory, allocates CPU resources and other series of system call ......
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What do you mean,I understand,I think you can be a little bit ignorant of the concept of flashing and background,What about the background,It's just that you change the settings of the mobile phone system,It's different from flashing,And flashing is like reinstalling the system for the computer is a concept,You can choose higher than your current mobile phone system,You can also choose low,How you want to brush,But I can tell you very responsibly,There is no risk in doing background,And flashing is a big risk。 Not good, if you get it right, the chance of risk is 00000....
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It means that the software window opened earlier is not completely closed, and is still running in the background, and the solution is as follows:
1. After opening the Huacai buried pants for the mobile phone to enter the system, press the menu button at the bottom of the mobile phone to enter.
2. After clicking, you can see the key to the program running in the background, and slide the program up to close the liquid bureau.
3. At the same time, in the background interface, click the trash can icon on the page.
4. After clicking, all the application information in the background will be cleaned up, and the background will be cleaned to the best state, as shown in the figure below.
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The software runs in the foreground, referred to in the desktop taskbar.
operating modes that can be seen on it, such as running game software;
Background running refers to the application.
After turning it off, you can continue to run the operation mode of related services a little, for example, Kexian Hall has not obtained some software in the background, and notified the user in time after receiving the user's message.
Foreground running means that the foreground task is running in the CPU, and it can also reference the running process that is visible on the desktop taskbar. It can also be understood as a series of program running tasks that the program will perform manually when there are multiple tasks.
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Set up background running, should first find the app in the settings to start management.
Open settings. Find "Settings" in your phone and turn it on.
Application launch management.
Select the software to enable background running permissions.
Select the software you want to run in the background and open the button on the software. "Background running is the process of running software that the user can't see. A software runs in the background, that is, the software is open, not closed, but not operated by the user, but runs in the background where the user can't see the oak, which also occupies the running memory of the mobile phone or computer. ”
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If you want the software to run in the background all the time, you can enter the settings on your phone, then select the app, and then find the software you want to run in the background, and then start the automatic background of the software to run. downThe specific steps are as follows:
Take oppor11 as an example:
1. First open the settings and click to enter the "App Management" option.
<>3. After that, click on the "Notification Management" option on this page.
4. Then click the switch option on the right side of the "Allow Notifications" in the blind page to turn on the background to run.
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Here's how:1. First enter the mobile phone settings function.
<>3. Enter the application permission management settings.
4. Select the software that needs to be set to run in the background.
5. Click on the single permission setting function for the negotiation file.
6. Turn on the self-start function, and you can really set up the application in the vivo mobile phone to run in the background.
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Operation steps: 1. Click "Start" - Control Panel;
2. Select "System and Security" - Management Tools - Scheduled Tasks;
3. In the scheduled task, click "Hui did not create a basic Ren Minbi banquet";
4. Enter the name and description of the basic task in the pop-up dialog box.
5. "Trigger" setting. The time of triggering can be set according to your needs;
6. Select "Daily", and then you can set the specific trigger time;
7. Bridge Silver "Operation" setting. In this step, you set the action you want to perform.
8. Click Done to set the scheduled task.
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If you are using a vivo phone, it means that the software is allowed to run in the background all the time:
1. Go to Settings - Battery - Background Power Consumption Management - Corresponding Software - Select "Allow High Power Consumption in the Background" (some models need to enter Settings - Battery - High Power Consumption in the Background - Turn on the corresponding software);
2. You can enter i Butler - Application Management Software Management - Authority Management - Permission - Auto-Start - Turn on the self-start permission of the software;
3. Enter the multi-task card interface, and add the drop-down software to the acceleration whitelist;
4. If the software is hidden, please unhide the software or remove it from the atomic privacy system.
Here's how to restore hidden software:
OriginOS Ocean and OriginOS 3: Go to Settings - Atomic Privacy System - Press and hold the app icon - Remove Privacy System;
OriginOS UI, FunTouchOS and above: Go to Settings - Fingerprint, Face & Passcode Face & Passcode Fingerprint & Passcode - Privacy & App Encryption - App Include & Hide - Switch after closing the software;
funtouchos: Long press on the blank space of the desktop--hide icon--swipe up the software icon, and the software can be restored to the desktop;
FuntouchOS is as follows: Click the menu button on the desktop - hide the icon (if you have a password to enter the password first) - click the software icon to restore the software to the desktop.
Note: If it is forcibly closed by the smart engine due to the fact that the software often occupies memory, it means that the software itself does not support the setting.
Quickly close all background apps: You can swipe up to call out the control center - click "One-click Acceleration", or enter the multi-task card switching interface, and click the bottom "x" to end all non-whitelisted apps.
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Take a Huawei phone.
For example, the way to set up background running is:
1. First of all, open the "Settings" in the mobile phone page, take "" as an example, then click on the application permissions, check all the permissions of the application, and return to the "Settings" page after clicking.
3. Return to the settings page, click "Traffic Management", set "Application Networking", select the app to check the mobile data and WLAN mode are turned on, return to the previous interface, see the traffic saving mode, click Close, because once the water saving cavity mode is turned on, the application will be disconnected from the hall stuffy network, and the background operation cannot be guaranteed.
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1. First open the "Settings" on the desktop of the phone;
2. After entering the settings interface, click "Apply All";
3. In the All Apps interface, click "Protected Apps" and open it.
4. In the protected apps interface, you can see which apps are allowed to run in the background and which apps are not allowed to run in the background. To change whether it's running in the background, just turn the switch on or off on the right side of the app.
What you need to know is that iPhone can't keep apps from quitting. This is because the background of the iPhone is a pseudo background,So when it runs in the background,It is equivalent to having closed the program,The interface when you open it again is the same as when you just exited,Yan Tang Yingge meaning,Apple actually has no background,So you can't keep the background running without exiting。 And the iOS system.
It's a fake background, and a fake background is to make the background program not use the CPU. When reopened, the previous records in the background will be called up, and then restored, so that the application does not occupy the CPU in the background, so as to speed up the system fluency.
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How to run the background of the mobile phone on the source software:
1. Select "Settings" on your phone;
2. Go to Settings, select All Settings, and then select "Apply";
3. Find the software that allows the background to run and click on the software;
4. After entering the application information page, find "Permission Segment Management" and click to enter;
5. Turn on the switch behind "Auto Start";
6. Turn on the comic combustion state behind "Auto Start" and complete the setting.
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1. You can set the app to freeze or close automatically when it is running in the background on your phone.
Second, you can also go to the mobile phone application management to forcibly close the application running in the background, here take the OPPO R9S mobile phone as an example, the specific method is as follows:
1. Find the "Settings" item on the desktop and click to enter.
2. After entering the settings interface, find the "Application Management" item in the drop-down menu and click to enter.
3. After entering the application management, find the application you want to close the background running under the running item, and click to enter.
4. After entering, click to forcibly stop, so that the app will be closed and running in the background, and other apps can be closed in the same way.
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On the line of sensitivity, it is a hand-held return operating system.
Turn off the background running of the software.,For example, open a software with your mobile phone.,Start browsing when the file eggplant suddenly comes in**,After picking up**,Click on the software just now.,You need to reload it again.。
Some phones run due to memory.
If the user does not use the software, the operating system of the mobile phone will stop it in the background, which may sometimes have a certain impact on the user.
Here's how to turn off background running on iPhone 12:
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Why is the running memory of mobile phones getting less and less? What should I do if the running memory is getting smaller and smaller?
Install a celetask task manager.,Run the task manager when you want to see it.,You can see it all.,You can do it to、Turn off to check the battery level、Check the memory card capacity、Restart the phone、Clean up the memory and other operations,This is the **address:
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