It depends on what type of sound device you buy. Some have speakers while others don't.
Speakers are considered to be an OUTPUT device, as the signal is traveling out of your device, and into the speaker.
Sound card configued to either speakers, headphones or to a midi device
Output. Think ablout it, they are receiving data, not sending it.
Speakers are attached to computers for the output of sound. Sound cards are required in the computer for speakers to function. Speakers range from simple; two-speaker output devices to surround-sound and multichannel units.
to let the sound come out.
(assuming you have a somewhat functioning pc already) 1) Sound card 2) Audio output device (ie. speakers, headphones, etc...)
Stereo sound makes it possible for different sounds to come out of different speakers.
Speakers can be used for any device that is intended to emit audio. Computers, MP3 players, cell phones, televisions etc. If the device is made to put out sound, chances are it already has speakers or is designed to have speakers used with it.
No, But it would internally have speakers built in to the device "but not separate speakers" this would be a accessory which you would have to buy.
sound chip/speakers
The sound chip/speakers. You can run a computer fine without a sound system.
There could be several reasons for the sound not working. This applies to both ipods and iphones. Make sure the device is not on mute. Most of the complaints posted on forums involve the sound no longer playing through the devices speakers after upgrading the OS - only the headphones work. This is apparently due to a bug in the software introduced by the upgrade that leaves your device thinking it is connected to a docking station so the signal to the device's speakers is routed to the docking station speakers which in reality are not connected. The fix it so connect the device to an actual docking station and allow sound to play through the docking station speakers then disconnect the device which will revert it back to using its own speakers.