Embedded systems (Edexcel GCSE Computer Science): Flashcards
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13 cards from this deck
What is an embedded system?
What is an embedded system?
Tiny computer built into device to do one specific job
Embedded vs general-purpose computers
Embedded vs general-purpose computers
Specialized for one task vs many different tasks
Real-time operation in embedded systems
Real-time operation in embedded systems
Must respond instantly when something happens
Why is low power crucial in embedded systems?
Why is low power crucial in embedded systems?
Many run on batteries for long periods
What is a microcontroller?
What is a microcontroller?
Processing unit at heart of embedded system
CPU in microcontroller
CPU in microcontroller
Brain that processes information and makes decisions
RAM in microcontroller
RAM in microcontroller
Temporary storage for data being actively used
Flash memory in microcontroller
Flash memory in microcontroller
Permanent storage, keeps programs even when power off
What are actuators?
What are actuators?
Convert digital commands into physical actions
What is firmware?
What is firmware?
Permanent program that tells device what to do
Sensors in embedded systems
Sensors in embedded systems
Input components that gather info from environment
What is Internet of Things (IoT)?
What is Internet of Things (IoT)?
Network of objects using embedded systems to share data
Main IoT security vulnerability
Main IoT security vulnerability
Default passwords never changed make devices hackable
