Materials for DTL, TTL circuit analysis

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SUMMARY

This discussion focuses on the analysis of DTL (Diode-Transistor Logic) and TTL (Transistor-Transistor Logic) circuits, specifically for an upcoming test. Participants recommend utilizing resources such as Google Images for visual understanding of TTL logic and suggest searching for guided tutorials on logic timing diagrams. Key concepts include the functionality of basic logic gates like NAND, NOR, AND, and OR, alongside the importance of truth tables for circuit analysis. The discussion emphasizes the need for qualitative and quantitative analysis of circuits, including input-output tables and graphical representations.

PREREQUISITES
  • Understanding of DTL and TTL circuit principles
  • Familiarity with logic gates: NAND, NOR, AND, OR
  • Knowledge of truth tables and their applications
  • Ability to interpret logic timing diagrams
NEXT STEPS
  • Research "TTL logic circuit analysis techniques"
  • Explore "logic timing diagram tutorials" on platforms like YouTube
  • Study "truth table construction for logic gates"
  • Review "data sheets for basic logic gates" for practical analysis
USEFUL FOR

Students preparing for electronics tests, educators teaching digital logic design, and anyone interested in enhancing their understanding of DTL and TTL circuit analysis.

diredragon
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Hi fellow forum-ers :),
I have a test in about two weeks where i am going to be given a dtl or ttl circuit which i have to analyse and calculate its function. The professor said that the circuit given to us will always be a useful and existing one meaning he's going to give us some NAND, NOR or similar circuit without specifying which circuit it is and we have to analyse the circuit both qualitatively with a table of inputs - transistor states - outputs to conclude which it is and quantitatively by making calculations and drawing a graph of the circuit with all the points of change drawn on the graphic.
So far i have only found a youtube video by ntelhrd

which deals with this and was wondering if any of you guys can recommend any extra material (preferably in video form if exists) to cover this in more clarity than i got from my lectures?
 
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So have you not covered any of this material in a lecture or classroom?
 
Averagesupernova said:
So have you not covered any of this material in a lecture or classroom?
We have, but we only just started and i wanted to learn ahead by studying from some other source. It will be covered in the lectures to come but i don't really like the way they explain it.
 
diredragon said:
We have, but we only just started and i wanted to learn ahead by studying from some other source. It will be covered in the lectures to come but i don't really like the way they explain it.
(I'm really old and even I never learned or used DTL logic, so I'm not of any help on that part) :smile:

I would start with a Google Images search of TTL logic, and be sure that you can figure out each of the dozens and dozens of images that show up. If any confuse you, save them and talk them through with your instructor or classmates. As for guided tutorials, I'd just keep using Google to try to find more of them.
 
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I will give you a start in a few simple lines:
-
OR: Any HIGH on input gives a HIGH on the output.
AND: Any LOW gives a LOW.
NOR: Any HIGH gives a LOW.
NAND: Any LOW gives a HIGH.
 
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Does the term "Truth Table" come to mind? It's a basic but powerful tool .
 
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berkeman said:
(I'm really old and even I never learned or used DTL logic, so I'm not of any help on that part) :smile:
[OFF TOPIC]I must be really old then, as my old ham mentor introduced me to RTL when it first became available in IC packages.[/END OFF TOPIC]
 
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Some data sheets for basic logic gates show the internal circuit. Perhaps practice analysing some of those?
 
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