It doesn't need a speaker.
So you can hear sound from the computer.
Yes you can definitely use a computer speaker even if your built in speaker broke. Local electronic stores and major retailers such as Myer sell computer accessories. You could visit your local computer store that sells computer speakers too.
Just like any other speaker.
I activating my speaker.
It's usually a small speaker mounted to your computer case. Some mother boards will have it soldered directly to the board.
A speaker would be considered a communication device.
The speaker you connect to those terminals needs to be 4 ohms or greater.
a wearable computer
No.....!
A speaker
Wires And A Amplifiers
Computer speaker cable is twin axial cable used for transferring a signal generated by a computer to speakers for broadcasting sound. Electronics companies such as Maplins sell speaker cable as do third party retailers such as Amazon.