Engin112-F07-L15-combinational - Maciej Ciesielski...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Maciej Ciesielski Department of Electrical and Computer Engineering 10/09/2007 Engin112 Lecture 15 Combinational Circuits 10/09/2007 Engin 112 - Intro to ECE 2 Recap from last lecture Incompletely specified functions y Dont cares in Karnaugh map NAND and NOR implementations y NOT, AND, OR from NAND or OR gates y Convert sum of terms into NAND implementation AND-invert and invert-OR representation Double bubbles This lecture y Combinatorial circuits Analysis of circuits Design of circuits 10/09/2007 Engin 112 - Intro to ECE 3 Conversion Example Contest: implement function F(A,B,C,D) = (0,2,7,8,10,13) d(A,B,C,D) = (6,14,15) y Group 1 : K-map, minimize function, NAND implementation y Group 2: K-map, minimize function, NOR implementation Solution (SOP form): F = BC + BD + ABD NAND NOR F = [ ( BC + BD + ABD ) ] = [ (BC) (BD) (ABD) ] NANDs NAND F = { [ (BC) + (BD) + (ABD) ] } = { [ (B+C) + (B+D) + (A+B+D) ] } inverter NORs NOR 10/09/2007 Engin 112 - Intro to ECE 4 Combinational Circuits So far: single function with one output y Most realistic problems use multiple outputs Need to extend to combinational circuits : y Combinational circuits Outputs depend on the inputs (only)...
View Full Document

This note was uploaded on 04/16/2008 for the course ENGIN 112 taught by Professor Ciesielski during the Spring '08 term at UMass (Amherst).

Page1 / 8

Engin112-F07-L15-combinational - Maciej Ciesielski...

This preview shows document pages 1 - 3. Sign up to view the full document.

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