2690970
Description
Mind Map by Beth Coiley, updated more than 1 year ago
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Created by Beth Coiley
almost 9 years ago
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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
- Supermarkets
- Advantages
- Fast method of input
- Fast method of input
- Disadvantages
- Needs specialised equipment
- Easily damaged - can be hard to read
- Must be in sight of reader
- Needs specialised equipment
- Read barcodes attached to products
- Paper-Based Forms
- Advantages
- Can be posted for completion
- Can be handed physically to recipients
- Can be posted for completion
- Disadvantages
- Not environmentally friendly
- Slow to process
- May not be returned
- Inefficient
- Errors may not be immediately detected,
which could affect data validity
- Not environmentally friendly
- Advantages
- Online forms
- Features
- Radio button
- Select one item from a list of
options - only one can be selected
- Select one item from a list of
options - only one can be selected
- Text field
- Enter unique data
- e.g. Postcode
- Enter unique data
- Drop-down list
- Select one item from a predetermined list
- Select one item from a predetermined list
- Tick box
- Choose one or more
options from a range
- Choose one or more
options from a range
- Radio button
- Features
- 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
- Monitoring greenhouse temperature
- Advantages
- Can capture physical quantities
- Accurate recording
- Can capture physical quantities
- Disadvantages
- Equipment cost
- Requires specialist software
- Equipment cost
- E.g. Heat, light and moisture sensors
- RFID Tags
- Applications
- Payment systems
- Supply chain efficiency
- Military goods tracking
- Payment systems
- Advantages
- Tag does not need to be in sight of the reader
- Location known at all times
- Tag does not need to be in sight of the reader
- Disadvantages
- Needs specialist equipment
- Needs specialist equipment
- Applications
- Near-Field Communication (NFC)
- Applications
- Contactless transactions
- Data exchange at close quarters
- Contactless transactions
- Advantages
- Simple to set up
- Low speed connection
- Simple to set up
- Disadvantages
- Devices must be close together
- Devices must be close together
- Applications
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