A device similar to mouse, with a sphere on the top that is moved for navigation instead of moving the whole mouse.
Which of the following devices will NOT be needed, if you want to preview and print the hard copy of the document?
To view the document on screen a visual display unit is required, which is monitor and to print the document a printer is required. Speakers are used for listening to music and scanner is used for digitizing a hard copy. So, in the given scenario speakers and scanner would not be required.
A device that transfers real pictures or documents into a computer generated file.
A pointing device that is also known as touchpad using which the cursor is moved by touching with the fingers.
Which of the following output devices helps a person to simply type the text and that text will automatically get converted into spoken words?
A speech synthesizer pre-processes the textual file to differentiate between numbers, dates and abbreviations and then turn them into words. Then for each word a list of phonemes is created and then finally the sound is produced.
Which of the following is an input as well as output device?
Using a touchscreen, you can provide input by selecting item on screen using your fingers and you can also view the output on screen. So, it is both an input and output device.
What is the common name for a video camera that streams video over the Internet?
Select the odd one out.
Except option [C], rest all are flat panel is play devices.
Identify the following:
1. It is an input device.
2. It is connected to the VDU
3. It contains a light sensitive element.
4. It allows the user to draw or point to objects on the computer screen or the monitor.
Which of the following devices interpret lines of different thickness that are mostly seen on many products available in supermarkets?
A barcode contains lines of different thickness, it contains the product code or price information. A barcode reader is a type of scanner that captures and reads information contained in a bar code.