Input /output ports and Devices

Important Points About Input /output ports and Devices 

• A port is used to con­nect the sys­tem and a device together,using a con­nect­ing cable. 

• The ports have dif­fer­ent shapes and sizes that pre­vent you from con­nect­ing a device to the wrong port.

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• A ser­i­al port sends and receives one bit of data at a time.

• The par­al­lel port trans­mits eight bits of data at a time

• The PS/2 pod is used to con­nect the key­board and mouse to the system.

• The USB port con­nects and also sup­plies pow­er to the device

• Infrared pors enable wire­less com­mu­ni­ca­tion between the device and the system.

• Blue­tooth is a tech­nol­o­gy which uses 2.45 GHz fre­quen­cy for wire­less com­mu­ni­ca­tion between devices with­in a ranged distance.

• IEEE 1394 enables fast and high data trans­fer between the sys­tem and the con­nect­ed devices. 

• Dig­i­tal Visu­al inter­face (ov) a dig­i­tal inter­face stan­dard cre­at­ed by the Dig­i­tal Dis­play Work­ing Group (DDWG) to con­vert ana­log sig­nals into dig­i­tal sig­nals com­mo­date both ana­log and dig­i­tal mon­i­tors.

• HDMI (High ‑Def­i­n­i­tion Mul­ti­me­dia ) is an inter­face stan­dard used to audio­vi­su­al equip­ment such as high-def­i­n­i­tion tele­vi­sion and home the­ater systems.

• eSA­TA stomers can now uti­lize shield­ed cable lengths up to 2 meters out­side PC to take advan­tage of the ben­e­fits the PC to take advan­tage of the ben­e­fits the SATA inter­face brings to storage.

• Devices use the IRO to com­mu­ni­cate win the microprocessor.

• IRQ con­flicts occur when two hard­ware devices use the same IRQ line.