Ep 086: Introduction to Input/Output

About this Video

• Video Title: Ep 086: Introduction to Input/Output
• Channel: Intermation
• Speakers: (Speaker name not provided in transcript)
• Duration: 00:19:18

Introduction

This video introduces input/output (I/O) in computer architecture. It explains how a processor communicates with I/O devices, including the role of the memory bus, memory maps, and different I/O methods (isolated I/O, shared I/O, and memory-mapped I/O).

Key Takeaways

• Memory Bus Components: The memory bus comprises data lines, address lines, and control lines for processor communication.
• Memory Map: A memory map organizes all addressable memory locations, including those for I/O devices.
• I/O Interaction Methods: Three primary methods exist: isolated I/O (separate memory spaces for memory and I/O), shared I/O (shared data and address lines but separate control lines), and memory-mapped I/O (shared data, address, and control lines, with I/O occupying a portion of the memory map).
• Data Direction Register: A data direction register configures each pin of an I/O port as either input or output.
• Data Register: A data register holds the values for output and reads values from input pins.