Summary

Chapter 1: Introduction to the Personal Computer 33Audio PortsAn audio port connects audio devices to the computer. The following audio ports are commonlyused, as shown in Figure 1-18:■■■■■Line In connects to an external source, such as a stereo system.Microphone In connects to a microphone.Line Out connects to speakers or headphones.Auxiliary In is an additional line in.Gameport/MIDI connects to a joystick or MIDI-interfaced device.Figure 1-18Audio PortsVideo Ports and ConnectorsA video port connects a monitor cable to a computer. Several video port and connectortypes exist:■■■Video Graphics Array (VGA) has a three-row 15-pin female connector and providesanalog output to a monitor.Digital Visual Interface (DVI) has a 24-pin female connector or a 29-pin female connectorand provides compressed digital output to a monitor. DVI-I provides both analogand digital signals. DVI-D provides digital signals only.High-Definition Multimedia Interface (HDMI) has a 19-pin connector and providesdigital video and digital audio signals.