What are the both Input/Output Devices?

The Devices that can be used to perform both functions i.e. input and output are called both input/output devices. These devices also known as Dual Devices and often called Dual Purpose Devices. With the help of Dual devices, we can input data into computers as well as we can output data from the computer to the outside world.

Input/output devices include: 

• Modem
• Headset
• Touch Screen Monitor
• Network Interface Card 
• Sound Card
• Hard disk drive
• floppy disk drive  
• DVD-Writer / Recorder

These devices also called Dual Devices, because they perform both functions.

Modem:

        

The modem stands for the Modulator/demodulator. A modem is a communication device. It makes possible receiving data from the internet into our system as input and sending data from our computer to another computer on the internet as an output.

It Performs two function Modulation that is converting a digital signal into an analog signal and Demodulation that is converting an analog signal to digital signal. It makes possible receiving data from the internet into our computer as input and sending data from our computer to another computer on the internet as an output.

The modem sends and receives data from one computer to another through telephone lines. It links your personal computer to the Internet through your Internet Service Provider (ISP). A telephone line supports only analog signals, whereas the computer accepts only digital signals. So when a computer wants to send data to another computer, digital data is converted into analog data before placing it on the telephone line. The process of converting digital signals into analog signals is called Modulation. Similarly, on the receiving computer, the modem converts analog data into digital data, before it is entered into receiving a computer. The process of converting analog signals into digital signals is called Demodulation.

Headset:

A headset may be considered as both Input / Output device because it has a microphone for voice input and small speakerphones for sound output. Headsets are used for video conferences and video calls through SKYPE and other such free software to make video calls.

Touch Screen Monitor:

Touch Screen Monitor is an input/output device. It uses a special touch-sensitive screen. The User can enter data by touching icons or menus on the screen. As soon as the user selects a command from the menu, the output is displayed on the screen. Commonly touch screen monitors use sensors to detect the touch of a finger.

Network Interface Card (NIC):

It is used to link network computers for transmitting data. With the help of the Network Interface Card, our computer can receive data, instructions, and information from another computer as an input. NIC will also be helpful to send data from our computer to another computer on the network as an output. NIC is also called a local area network card or LAN adapter.

Sound Card:

A sound card is a computer component that facilitates the input and output of audio signals to and from a computer. A speaker produces audio output with the help of a sound card. In addition, we use a microphone to input our voice into the computer with the help of a sound card.

Hard disk Drive:

The hard disk drive is an input/output device. It has read/write heads to read data from the hard disk as an input and to write data to the hard disk as an output.

Floppy disk Drive:

Floppy disk drive is an input/output device. It has read/write heads to read data from floppy disk as an input and to write data to a floppy disk as an output.

DVD-Writer / Recorder:

DVD-Writer is an input/output device. It is used to store data on DVD. It is used to read data from DVD as an input and to write data to DVD as an output.