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This short episode shows how a complicated truth table can be clarified by using “don’t cares” to represent input values.

Adapting Materials

For ease of adapting the materials, audio and transcripts are available to download.

Creative Commons License

Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License
This work is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 4.0 International License.

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Worksheet for this episode is available on the author's website. Please note that the worksheet is not under a Creative Commons License.


Computer Organization and Design Fundamentals Series was created as part of the East Tennessee State University’s Open Educational Resources (OERs) Awards Program.

Document Type


Episode-6.06-Transcript.pdf (75 kB)
Episode 6.06 – Don’t Cares as Inputs Transcript in PDF

Episode-6.06-Transcript.docx (14 kB)
Episode 6.06 – Don’t Cares as Inputs Transcript in Word