Most computer speakers require an external power source,but there's no technical reason you can't connect them.Your computer speakers use a mini RCA jack and that's not common in TV's.Or you can just build an entertainment PC in which case they'd both be the same thing.
One can purchase indoor and outdoor speakers at an electronics store. Best Buy has a whole collection of speakers available. They have both indoor and outdoor speakers available.
Yes. Best Buy offers a wide variety of both decorative and performance speaker stands. If floor space is limited, wall mounted speakers are available as well. Their selection can cater to a wide range of budgets.
The first commercially available TV was sold by RCA in 1939. It received up to 5 channels (VHF 1, 2, 3, 4, 5 -- we no longer have channel 1 but 2 to 5 are the same). Sales were stopped in 1941 due to the start of WW2. Analog computers of both mechanical and electronic types were available before this. Digital computers of both electromechanical and electronic types were not available until after this. Both were roughly 3 orders of magnitude more expensive than the top of the line RCA TV of 1939 through 1941. The very first invention of a TV was just before WW1 but they were mechanical and not practical to build and sell. The very first known invention of an analog computer was around 100 BC, but it was mechanical. The very first invention of a digital computer was in the 1830s by Babbage, but it was mechanical and he was never able to build it.
You can buy them both. They are easily available in stores.
Yes, it is possible to have a remote that will control both your TV and stereo. Many universal remotes will allow you to control multiple devices.
The best flat screen tv brands available are Panasonic and Sony. They are both very popular.
Many televisions do not have headphone jacks anymore. Almost every TV that has a headphone jack will shut off its internal speakers when the headphones are connected. You should look at wireless headphones that will connect to the audio output of the television instead of the headphone jack if you need to use both at the same time.
I can't help you with the connections with just the info provided but I can tell you that you should not have the TV's speakers on at the same time while listening to the sound system speakers. I would mute the TV's speakers (go to the audio menu and turn the internal speakers off) and always use the sound system speakers.
Available video.
Yes Sony does have some 3D computers available. In fact they currently offer both desktops and laptop computers with 3D capabilities.
You need an Ethernet hub. Connect your modem and both computers to the hub, and both of your computers will have a connection available. The OS's only affect the connection settings on each computer.
Satellite internet will be available in your area, if they offer satelitte television services; the same companies will do both services for you at bundle prices.