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2690970
Data Capture Methods - Cambridge Nationals ICT
Description
GCSE ICT Mind Map on Data Capture Methods - Cambridge Nationals ICT, created by Beth Coiley on 09/05/2015.
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cambridge nationals
ict
data
data capture
gcse
ict
gcse
Mind Map by
Beth Coiley
, updated more than 1 year ago
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Created by
Beth Coiley
over 9 years ago
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Resource summary
Data Capture Methods - Cambridge Nationals ICT
Barcode Readers
Read barcodes attached to products
Accompanied by a 13-digit number
Read by a laser
Applications
Supermarkets
Libraries
Advantages
Fast method of input
Disadvantages
Needs specialised equipment
Easily damaged - can be hard to read
Must be in sight of reader
Paper-Based Forms
Advantages
Can be posted for completion
Can be handed physically to recipients
Disadvantages
Not environmentally friendly
Slow to process
May not be returned
Inefficient
Errors may not be immediately detected, which could affect data validity
Online forms
Features
Radio button
Select one item from a list of options - only one can be selected
Text field
Enter unique data
e.g. Postcode
Drop-down list
Select one item from a predetermined list
Tick box
Choose one or more options from a range
Control System Sensors
E.g. Heat, light and moisture sensors
Measure data, then use an ADC to convert analogue to digital signals
Processed data fed back into the system for control is called feedback
Applications
Monitoring greenhouse temperature
Weather data
Traffic control
Advantages
Can capture physical quantities
Accurate recording
Disadvantages
Equipment cost
Requires specialist software
RFID Tags
Applications
Payment systems
Supply chain efficiency
Military goods tracking
Advantages
Tag does not need to be in sight of the reader
Location known at all times
Disadvantages
Needs specialist equipment
Near-Field Communication (NFC)
Applications
Contactless transactions
Data exchange at close quarters
Advantages
Simple to set up
Low speed connection
Disadvantages
Devices must be close together
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