{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

EE101Lecture8

EE101Lecture8 - C = P P(V B T R 4 Levels of Logic © Mark...

Info iconThis preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
© Mark Redekopp, All rights reserved Introduction to Digital Logic Lecture 8: Negative Logic Circuit Manipulations 2-Level Implementations
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
© Mark Redekopp, All rights reserved Negative Logic • In negative logic 0 means true and 1 means false volts time 1=true/on 0=false/off volts time 1=false/off 0=true/on Negative Logic Positive Logic (Value/Meaning) (Value/Meaning)
Background image of page 2
© Mark Redekopp, All rights reserved Negative Logic A negative logic OR function is equivalent to an AND gate = = A negative logic AND function is equivalent to an OR gate
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
© Mark Redekopp, All rights reserved Circuit Design • Take a problem description and create a circuit – “A car stereo display should show the c lock time (as opposed to other information) when the p ower is off or when the p ower is on and the s ound settings or r adio station are not being changed. The sound settings are considered as the v olume, b alance and t reble/bass.” C = P + P(S+R) = P + P((V+B+T)+R)
Background image of page 4
© Mark Redekopp, All rights reserved Car Stereo Example C = P + P((V+B+T)+R)
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
© Mark Redekopp, All rights reserved Car Stereo Example
Background image of page 6
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Background image of page 8
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Background image of page 10
Background image of page 11
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: C = P + P((V+B+T)+R) 4 Levels of Logic © Mark Redekopp, All rights reserved 2-Level Implementation • Converting to SOP or POS always yields a 2-level implementation C = P + P((V+B+T)+R) = P + P((V•B•T)+R) = P + P•V•B•T + PR © Mark Redekopp, All rights reserved AND-OR / NAND-NAND • S O P = > – AND-OR Implementation – NAND-NAND Implementation = © Mark Redekopp, All rights reserved OR-AND / NOR-NOR • P O S = > – OR-AND Implementation – NOR-NOR Implementation © Mark Redekopp, All rights reserved AND-NOR / NAND-AND • Suppose we wanted to implement a function with AND-NOR – Implement F’ via SOP, AND-OR – Change last OR gate to NOR and you will have F. – AND-NOR can then be converted by NAND-AND © Mark Redekopp, All rights reserved OR-NAND / NOR-OR • Suppose we wanted to implement a function with OR-NAND – Implement F’ via POS, OR-AND – Change last AND gate to NAND and you will have F. – OR-NAND can then be converted by NOR-OR...
View Full Document

{[ snackBarMessage ]}

Page1 / 11

EE101Lecture8 - C = P P(V B T R 4 Levels of Logic © Mark...

This preview shows document pages 1 - 11. Sign up to view the full document.

View Full Document Right Arrow Icon bookmark
Ask a homework question - tutors are online