Combinational Functional - Introduction to Logic Design - Lecture Slides, Slides of Digital Logic Design and Programming

Download Combinational Functional - Introduction to Logic Design - Lecture Slides and more Slides Digital Logic Design and Programming in PDF only on Docsity! Combinational Functional Blocks & Rudimentary Logic functions Docsity.com Class 14 – Logic Blocks • What is a combinational logic function block • Examples of low level blocks • Material from section 3-5 and 3-6 of text Docsity.com Typical past blocks • SSI – Quad 2 input AND gate – Hex inveter – Dual D F/F • MSI – 4-bit ALU – 4-bit Register Docsity.com Rudimentary Logic Functions • Value Fixing, Transferring and Inverting • Functions of 1 variable – X F=0 F=X F=X’ F=1 – 0 0 0 1 1 – 1 0 1 0 1 Docsity.com Implementation of these functions • Implementation of the functions of 1 variable • 2 representation for the F=1 and F=0 case Docsity.com Solution • Truth table • Input P=0 says lights off, 1 says lights on • Input R=0 says lights off, 1 says light on • Mode says who has control Docsity.com Could be bad • There are actually 5 inputs  a 32 entry truth table. • Fig 3-14 from text. Implementation Docsity.com And refinement of I’s • Giving a final implementation of Docsity.com