How to connect a monitor to a PC, smartphone and tablet - Technology
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How to connect a monitor to a PC, smartphone and tablet

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How to connect a second monitor to a PC with an HDMI to HDMI cable, and how to connect it to smartphones and tablets with an HDMI to USB/C cable or with an adapter

Using an additional monitor can be useful in many circumstances. It can be connected to a computer to view the screen in a larger area, but it can also be used to enlarge the same screen.

Furthermore, with the appropriate cables and adapters, a monitor can also be connected Board and there smartphone to display the relevant screens. In this post we will see how to proceed with the connection, how to choose the computer settings and how to choose the sound output device. Monitors usually also have
built-in speakers to play audio, but if they're not there, you can buy and connect.

The monitors are all equipped with a port HDMI to be connected with a special cable to the corresponding port HDMI computer windows. Mobile devices have no ports HDMI but they only have one door USB from
Type C which is to charge the battery, to transfer files to a
pen drive
and for other features.

However, not all mobile devices are compatible with projecting your screen to another device. It is not very clear why some products are not high quality. The discriminant appears to be there
software version of the device and the presence or absence of a particular technology. I could test this with Android 9 the screen is not projected while with Android 11 there are no problems in that regard.

The technology necessary for Screen mirroring is called MHL that means
Mobile High Definition Link. It is a standard
2010 which allows the
video signal transmission by the door
USB
. This standard supports resolutions up to
2160p (Ultra HD or 4K).
The problem is that often the presence or absence of this technology
not included in the technical sheets from
smartphone AND Board.

posted on my
Youtube channel
a tutorial in which I illustrate how
connect the monitor to the PC and cell phone.

 

To get an idea of the prices of monitors on the market, I list someone found on amazon:

  1. Lenovo Q24i
    1920×1080, 23.8 “HDMI + VGA at the cost of
    € 169,00;
  2. Samsung CF39 Monitor, 24″, 1920×1080 (Full HD), HDMI, D-Sub, Audio input at the cost of € 141,07;
  3. LG 24ML600S Monitor
    24", 1920 x 1080, 10W stereo audio, HDMI, audio output at the cost of 149,99€;
  4. Acer KG241YAbii 24" monitor, HDMI cable included at the cost of
    139,90€.

Some monitors in addition to the port HDMIthey also have an old door VGA alternative that still offers inferior performance. If your monitor doesn't have an audio output, you can connect external speakers like these:

  • Trust Leto
    Speaker Set 2.0 at the cost of 9,90€.

Who wants to connect PC to monitor also need a cable
HDMI to HDMI if it was not included in the monitor:

Instead of connect monitor to mobile device you need a cable like this:

Finally, who already had the cable HDMI to HDMImaybe supplied with the monitor, to connect it to the mobile device you need a adapter with a feminine port of HDMI
and a male USB Type-C like the following:

  1. TSUPY USB C to HDMI Adapter
    4K at the cost of 9,99€;
  2. USB Type C to HDMI Adapter, Up to 4Kat the cost of 13,99€.

CONNECT THE MONITOR TO THE WINDOWS PC

After connecting the computer to the monitor with the cable
HDMI to HDMI

and having turned on the monitor you go up Definitions.

Inside System -> Screen the new monitor will be detected. The computer will be indicated with the number 1 while the monitor added with the number 2. If we weren't sure, let's go to the button Identify.

Then I will appear identification numbers on their respective screens. Click on the menu on the right.

monitor options

There are four possible choices. With Duplicate these screens
you will see the same screen on both devices. With
Show only in 1 and with Show only in 2 the screen will only be shown on one device.

The most interesting choice is Extend these screens. With this option,
If you move the mouse to the right, it will disappear from the computer screen to appear from the left on the monitor screen. With this solution we can also
drag windows from the computer screen to the monitor screen and vice versa
.

When switching from one option to another
let's go black for a few seconds then
see a message self to maintain
The Definitions or to restore the previous ones with a time of 15 seconds to choose.

change monitor settings

I remember that instead of a monitor you can use it
another computer screen

per
design the screen
of the first and choose one of the same four options. To project the screen of a computer the application starts
To connect.

SEE MOBILE DEVICE SCREEN ON MONITOR

To display the screen of a smartphone or tablet on a monitor, no special settings are required.

Just connect the port with a cable HDMI of the monitor with the port USB/C of the mobile device. This can be done with a special cable or with a cable HDMI to HDMI to which an adapter has been added USB/C to HDMI.

smartphone screen on monitor

If audio is also playing on the device, the sound will be heard through the monitor speakers.

HOW TO SET UP PC AND MONITOR AUDIO

When connecting a computer screen you can choose
which device to play audio from.

he goes up Settings -> System -> Audio -> Output
and then choose where to hear the sound from.

play audio output

In fact, the options for the computer's speakers and those connected to the monitor will be shown.

USE MONITOR WITH OBS

We saw how with the free and open source program
OBS Studio
you can record the screen Computer. However, there is the difficulty that with just one monitor it is displayed
a matryoshka-style preview
.

That is, you see the window OBS Studio that registers. With another monitor available we can choose the option Extend these screens and drag the windows we want to record onto the monitor.

record screen with OBS Studio

Inside Sources It is added Capture the screen but among the options you select to register it
Screen 2 leaving the interface
OBS Studio

inside Screen 1. In this way in
Screen 2 we could record the tutorial and give it Screen 1 Machete direction streaming from one source to another by viewing it.