Skip to main content

What are Dual Devices or Both Input/ Output Devices

The devices that can be used to perform both functions -input and output- are called Dual Devices. These devices are also called Dual Purpose Devices or Both Input/Output Devices. With the help of a dual purpose device, we can enter data into computer as well as we can output data from the computer to outside world.  For example, Dual devices include:  Touch Screen Monitor, Modem, Network Interface Card, Sound card, Hard disk drive, Floppy disk Drive, Magnetic Tape Drive CD-Writer and DVD-Writer etc. These are also called Input/output devices, because they perform both functions.
  • Touch Screen Monitor
Dual Devices or Both Input / Output Devices - Touch screens
Dual Devices or Both Input / Output Devices - Touch screens
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 menu, output is displayed on screen. Commonly touch screen monitors use sensors to detect touch of finger.

  •      Headset

A headset may be considered as both Input / Output device, because it has a microphone for voice input and small speaker phones for  sound output.

Examples of Dual Devices or Both Input / Output Devices - headsets
Example of Both Input / Output Devices - headsets

Headsets are used for video conferences and video calls through SKYPE and other such free software to make video calls.
  • Modem
Modem is example of Dual device
Internal modem

External modem

Modem stands for Modulator / Demodulator. Modem is a communication device.  It makes possible receiving data from internet into our computer (input) and sending data from our computer to another computer on internet(output).  It performs two functions: Modulation (converting digital signal into analog signal) and Demodulation(converting analog signal to digital signal). It makes possible receiving data from internet into our computer (input) and sending data from our computer to another computer on internet(output). Modem sends and receives data from one computer to another through telephone lines. It links your personal computer to the Internet through your ISP (Internet Service Provider). A telephone line supports only analog signals, whereas 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 on telephone line. The process of converting digital signal into analog signal is called Modulation. Similarly, on the receiving computer, modem converts analog data (from telephone line) into digital data, before it is entered into receiving computer. The process of converting analog signal into digital signal is called Demodulation.
  • NIC - Network Interface Card
NIC is Example of Dual devices
NIC or LAN card - NIC is Example of Dual devices

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

  • Sound Card
Sound card is Example of Dual devices
Sound card or audio 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 sound card. In addition we use microphone to input our voice into computer with the help of sound card. 
  •     Hard disk Drive
Dual devices or both input output devices

Hard disk drive is an input/output device. It has read/write heads to read data from hard disk(input) and to write data to hard disk(output).
  • Floppy disk Drive
Dual devices or both input output devices

Floppy disk drive is an input/output device. It has read/write heads to read data from floppy disk(input) and to write data to floppy disk(output).   
  • Magnetic Tape Drive
Dual devices or both input output devices

Magnetic Tape drive is an input/output device. It has read/write heads to read data from magnetic tape(input) and to write data to magnetic tape(output).
  • CD-Writer / CD-Recorder
Dual devices or both input output devices
CD-Writer is an input/output device. It is used to store data on CD. It is used to read data from CD(input) and to write data to CD(output).
  • DVD-Writer / DVD-Recorder
Dual devices or both input output devices

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

Comments

Post a Comment

Popular posts from this blog

Convert Centimeters to Inches Python Programming | Python Program Conver...

YouTube Video Tutorial How to write a Python program to convert centimetres to inches Formula to convert centimetres to inches   Explanation of this Python Program This Python program prompts the user to enter a height in inches, converts it to centimeters, and then prints the converted value. It uses the conversion factor of 2.54 to perform the conversion and rounds the result to two decimal places before displaying it to the user. Here's an explanation of the provided Python program line by line: python inches = float ( input ( 'Enter the Height in inches to convert into centimeters:' )) This line prompts the user to enter a height in inches and assigns the entered value to the variable inches . The input() function is used to receive input from the user, and float() is used to convert the input into a floating-point number. python centimeters = inches * 2.54 This line calculates the equivalent value in centimeters by multiplying the inches variable by the conver...
Post a Comment
Read more

Find Your Correct Age From Date of Birth

First of all click on First two digits to type Month number from keyboard like any number from 1 to 12. . Now click on next two digits and type day number of month that is date from 1 to 31. In the last step type the year of your birth in four digits like 1995.  Now click on the blue button with text "Calculate Age". Your accurate age will be displayed below the button. For example. If today is 09-16-2023 that is September 16, 2023 and you type birth date as 11-01-2000 that is November 1, 2000, your accurate age will be displayed as:Your age is 22 years, 10 months, and 15 days. Age Calculator Age Calculator Calculate Your Age Now! Enter your date of birth: Calculate Age As shown in the image below:
Post a Comment
Read more

Use Microsoft Excel Online [ 2020 ] Free Spreadsheet

Topic: Use Microsoft Excel Online Free Spreadsheet How To Create Excel Worksheet Online Free Don't worry if you are to prepare a worksheet in Microsoft Excel and you have not purchased Microsoft Office software. You can use free online version of Microsoft Excel Online and create worksheets as you like. Following are the instructions on how to use Microsoft Excel Online. Use Microsoft Excel Online Free Spreadsheet Here are the easy steps to create  power calculator worksheet using Microsoft Excel Online free. 1. for this purpose you need to have a Microsoft Account. 2. Type  or copy paste the following address in your web browser's address bar https://office.live.com/start/excel.aspx Login To Your Microsoft Account. If you are not using any Microsoft account, please create an account now.  3. Login to your Microsoft account ( like abc@hotmail.com or xyz@hotmail.com) or read this post to Create a new Microsoft account in easy steps . Cho...
Post a Comment
Read more