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Data Input 02
A microphone is an input device that converts sound into data.

Data Input 02

This KS3 ICT quiz takes a second look at data input. In the world of ICT, inputting data to a computer is a crucial starting point and there are many ways to go about it. If you want to input an image, a digital camera would be regarded as being the input device. This needs connecting to the computer and the image files can then be transferred manually to the computer. Voice recognition has been around for many years and as the the software gets better, it is being used more and more. The input device for voice activated commands or for dictating to word processing software needs to detect sound waves - a microphone!

The above examples are all manual input devices - there are a number of automatic devices too. One way of automating input is to present it in the form of magnetised ink or on a strip of magnetic tape. Some early computers required reels of magnetic tape or small magnetic discs to hold and transfer information. The technology is still used on plastic cards. All that you need to do is to place the magnetised strip (or magnetised ink characters) next to the appropriate reader and it is automatically entered into the computer.

Which device converts documents and images into digital data?
It uses a moving strip of light to build up the copy of the document or image
Which device converts sound into data?
DVD player
MP3 player
Software can then be used to turn it into a digital recording, a voice command or text in a word processor
Credit cards have a magnetic stripe on the back .......
to record how much money is left in the account
to stop the wrong person using the card
to store fingerprint details of the account holder
to store information to identify the account holder
Swiping the card in a reader transfers the information to the computer system where it can be processed as needed
The magnetic stripe on a credit card is read by a .......
magnetic card reader
magnetic domain reader
magnetic stripe reader
stripe reader
The stripe stores basic identifying information
Credit cards have a microchip added because .......
chips can hold much more data about the customer
the chips store encrypted data reducing counterfeiting
the chips store encrypted data which completely stops fraud
the chips hold information about the bank
These cards are more secure but cannot stop fraud totally
Microphones can input sound, however .......
the microphones must have a 'Digital' sticker
the microphones must have optical inputs
the microphones need digital to analogue converters
the sound needs converting to digital via a soundcard
Microphones produce analogue electrical signals
Banks often use a MICR device. This stands for .......
Magnetic Ink Character Reader
Micro Ink Computer Reader
Micro Interface Computer Reader
Multi Intelligent Core Responder
One use of magnetic ink is to record data on bank cheques
Sensors are hardware devices which .......
detect real-world properties and converts them to data
detect what is happening in the software
flash when there is an error detected
make sure that any input data is valid
Examples of sensors are light and temperature sensors as used in science or geography datalogging experiments and investigations
Which of these is not an input sensor?
Life-form sensor
Light sensor
Moisture sensor
A 'life-form' sensor is purely sci-fi - at the moment!
Computers with MIDI can input data from .......
car engine diagnostic sensors
digital radio broadcasts
Met Office weather sensors
musical keyboards
MIDI - Musical Instrument Digital Interface
You can find more about this topic by visiting BBC Bitesize - Data and databases

Author:  Duncan Daish

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