Guide to Embedded I/O Systems and Digital Interfaces
Learn about Embedded I/O systems, including GPIO, ADC, DAC, and serial communication protocols like UART, SPI, and I2C for digital interfacing.
Embedded I/O Systems
Seminar Presentation
Gouri Sunil
BTech CSE
College Name
March 27, 2026
Section 02
Introduction
Embedded systems interact with the physical environment
Use Input/Output (I/O) for communication
I/O enables:
Receiving input
Producing output
Essential for all embedded applications
Embedded I/O System
System that handles input and output operations
Connects: Microcontroller ↔ External devices
Acts as a bridge between: Digital system and real world
03
Types of I/O Devices
04
Input Devices
Sensors (temperature, pressure)
Switches, Keypads
Output Devices
LEDs, LCD Displays
Motors, Buzzers
I/O Interfaces
Required since CPU works with digital signals only
G
GPIO
General Purpose digital Input/Output
A
ADC
Converts Analog → Digital signal
D
DAC
Converts Digital → Analog signal
Serial Communication
Data transferred bit by bit — Efficient and widely used
UART
TX/RX communication, asynchronous
SPI
High-speed synchronous communication
I²C
Two-wire synchronous communication
Applications & Conclusion
Applications
Automotive Systems
Medical Devices
Smart Homes
Industrial Automation
IoT Devices
Conclusion
Embedded I/O systems enable interaction with the real world
Core part of modern electronic systems
Thank you for your attention
- embedded-systems
- io-systems
- microcontroller
- gpio
- electronics
- iot
- serial-communication