MAC usage tutorial

Mac computers are our commonly used Internet tools，Sometimes we need to take a break but don’t want to interrupt our current work，So how to lock the screen quickly? Here’s how to quickly lock the screen on your Mac computer，Hope it helps everyone。 Setup steps： 1. Open System Preferences •Click on the Apple icon in the upper left corner of the desktop，Select "System Preferences" from the drop-down menu。 2. Go to Security & Privacy • In the System Preferences screen，Click "Security & Privacy"。 3.Unlock Settings •Click the “General” tab above，Then click the lock icon at the bottom left of the interface。 •Enter the password in the pop-up dialog box and select "Unlock"。 4. Set a password requirement • Select "Require password now" in the "Enter sleep or start screen saver" section，Close the page when finished。 5. Set a screen saver •Return to System Preferences，Click on "Desktop & Screensavers"。 •Select the "Screensaver" tab above，Then click "Trigger Corner" at the bottom right of the interface。 6. Set the trigger angle •In the pop-up trigger angle setting interface，Select a corner as the corner to trigger the screensaver，After the settings are completed, click "OK" on the lower right。 •Now，Move the mouse to the corner you just set to complete the quick lock screen。

Many Mac users may not know，Mac computers have a hidden screen-rotating feature。by rotating the screen 90 degree，You can read e-books or movies while lying down。So，How to rotate the screen on a Mac computer? Let me share with you the specific method below，Let’s take a look together。 1. Open System Preferences •Click on the Apple icon in the upper left corner，Choose to enter System Preferences。 2. Go to monitor settings •In System Preferences，Click on the "Display" option。 3. Select the rotation angle •In the monitor settings interface，Find the "Rotate" option。There are three rotation angles to choose from in the drop-down menu：90 degree、180 degree and 270 degree。After selecting the desired rotation angle，Exit settings to complete。 Notes •If you don’t see the “Rotate” option in your monitor settings，It may be that your computer does not support the screen rotation function。 Go through the above steps，You can easily rotate your Mac screen，Bring more convenience to your use。

Virtual Keyboard is a accessibility keyboard in macOS，It not only provides advanced typing features such as typing suggestions，Also has navigation function。So，How to enable the on-screen virtual keyboard on a Mac computer? 1. In the menu bar in the upper right corner of the screen，Tap the input method menu icon。 2.Select "Show keyboard display program"。 so，A white virtual keyboard window will appear on the screen。You can enter text by clicking on this keyboard。 If you need to close the virtual keyboard window，Just click the red close button in the upper left corner of your keyboard。

Firewall can effectively protect your Mac computer from unauthorized network access。Here are the steps to turn on and configure the firewall on your Mac computer。 step one：Open System Preferences 1. Click the Apple icon in the upper left corner of the screen，Select "System Preferences"。 Step 2：Go to Security & Privacy 2. In System Preferences，Click "Security & Privacy"。 Step 3：Unlock settings 3. Click the lock icon in the lower left corner，and enter the administrator password to unlock settings。 Step 4：Open the firewall 4. Select the "Firewall" tab，Click the "Turn on firewall" button。 Step 5：Configure the firewall 5. Click the "Firewall Options..." button，Make further configuration。You can choose to allow or block network connections for specific applications。 Step 6：Complete the settings 6. After the configuration is completed，Click "OK" to save settings。 Summary Through the above steps，You can easily turn on and configure your Mac computer’s firewall，Enhance system security。