Most LCD T.V. can be used as a computer monitor in this case you need nothing but what the Wii comes with, Flat screen monitors are the only ones that have the same equipment and can be put up with a wii
A high fequency graphics card is going to be you biggest concern. Computer monitors are not designed esp for ps3 games.
You would need the right type of connection cord from the gameboy to your computer montior.
The best option is an Xbox 360 VGA HD AV Cable.It costs about 33 dollars,but it does what you want without an ordeal.You plug the VGA into your monitor and the other end into your XBOX.That's it.
Connect your PSP to the computer with a USB cable and watch the game on the computer screen while you play it on the PSP, there is a way that you can use a kind of accessory called "PSP to PC converter" to hook your PSP to PC monitor. You can google it and find the online shops who sell it.
You connect a PS2 to a TV not a computer monitor.
PS3 were designed for a TV or HDTV and not a computer monitor
You need a VGA adapter to play PS2 games on an old monitor.
Playstation 3 will play HD DVDs. You do not need an accessory to have the HD DVD work.
If all you want is to play your Nintendo Switch games on your computer’s monitor, you don’t need to connect it to your PC. Most modern monitors have HDMI connectors and are likely to have more than one. So all you need to do is plug your Switch dock into your monitor using an HDMI cable.
You don't need an iHome, but it is a nice accessory to play music out loud.
On a 21 inch TV yes on a Computer monitor no
You need a graphics card to see the monitor.