It is a piece of Hardware that sends a signal to the CPU
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What types of input devices can be specialised?
Trackball mice, Specialist keyboard with specific functions, Interactive whiteboards
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What types of barcodes are there and what are their uses?
Universal product code version 'A' (UPC-A) - numeric digits only, retail and warehouses | Code-128, has letters and numbers, transport and shipment tracking
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WWhat are QR codes?
They are 2D barcodes that can be read by using a camera and can link to a website or information
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What type of scanners are there?
2D Scanners - converts word/paper documents to a computer-readable format | 3D Scanners - Used to can 3D objects (Buildings, medicine, etc.) can use Tomography which creates an image from thin slices (less than 0.1mm thick)
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How do sensors work?
They collect data in an analogue form and convert it to digital data, uses are monitoring and control applications
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Define Analogue
Values that have no discrete value and data changes smoothly rather than exact jumps, can be converted using an Analogue-to-digital converter (ADC)
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What are the differences between monitoring and control devices?
Monitoring - will not make any changes to the process, will just report it | Control - Device can alter how the process is operating, can change the value of the next input received, the output can affect the next input it receives
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Give examples of detection and monitoring systems
Detection - Pressure, acoustic, infra-red sensors | Monitoring - Intruder detection, alarm system in buildings/homes which is armed by a PIN code or alarm fob
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Other cards in this set
Card 2
Front
What is an Input Device?
Back
It is a piece of Hardware that sends a signal to the CPU
Card 3
Front
What types of input devices can be specialised?
Back
Card 4
Front
What types of barcodes are there and what are their uses?
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