Introduction to Input and Output (I/O) Requirements and Interfaces

This topic introduces how Input and Output is provided to the processor and memory from hardware devices. We look at how varied the requirements and interfaces are for all of the I/O devices that computers have to manage and how hardware and strategies like Programmed I/O, Interrupts, DMA (Direct Memory Access) and I/O Controllers enable the computer efficiently work with them all. These methods of addressing and communicating with input and output devices allow computers to work with many different types of peripheral devices. These devices include Monitors, touchscreens, keyboard and mouse, secondary storage such as hard disks and SSD (Solid State Disk), network connections and more.
Challenges that need to be overcome include:
- Different formats required by the devices
- Incompatibilities in speed between the devices and the CPU that make synchronization difficult
- Bursts of data vs. streaming data
- Device control requirements that would tie up too much CPU time
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It is part of my Computer Organization and Architecture course which you can find here: • Computer Organization ...
If you have not seen the Little Man Computer (LMC) series of videos, they explore how a computer works at it most fundamental level. You can find them here:
* A recommended introduction to Little Man computer video here: • Little Man Computer Ex...
* A "Hello LMC" video where we do a smaller program and talk more in-depth about the instruction cycle and basic instructions: • Little Man Computer (L...
* And an intermediate step where we introduce branching and explore recreating conditional statements with LMC: • Little Man Computer (L...
* Finally we explore iteration, labels and advanced LMC: • Little Man Computer (L...
Here are presentation slides that can be used as a supplement to follow along and as a future reference for this content: drive.google.c...

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you are a great teacher... Happy to find your channel 🙂