Embedded Systems
Definition
Embedded System
A computerised system designed to perform a specific set of tasks within a larger device, often with real-time control and limited user interaction.
- Embedded systems are often resource-constrained, meaning they have limited processing power, memory, and energy. This makes efficient communication protocols essential.
- They are integral to modern technology, from smartphones to industrial machinery.
Why Communication Matters
- Interconnectivity: Embedded systems often need to exchange data with other devices or systems.
- Functionality: Communication enables features like remote monitoring, control, and data sharing.
- Efficiency: Choosing the right protocol ensures reliable and efficient communication.
Key Communication Protocols
Wi-Fi
Definition
Wi-Fi
A wireless communication technology that uses radio waves to provide high-speed internet and network connectivity without physical cables.
- Range: Medium to long (20–50m indoors, more outdoors)
- Speed: High (up to 1 Gbps with newer standards)
- Power Usage: High
- Use Cases: Streaming, file transfer, smart home devices, laptops
- Pros: Fast, widely supported, secure
- Cons: High power use, may interfere with other devices
A smart refrigerator uses Wi-Fi to send inventory data to a mobile app, allowing users to track food supplies remotely.
Bluetooth
Definition
Bluetooth
A wireless communication standard for short-range data exchange between electronic devices, such as phones, speakers, and computers.
