Unit 1
Introduction to logic families: ECL – TTL – Tri state logic. Implementation technology: Transistor switches – NMOS logic gates – CMOS logic gates – Negative logic systems. Introduction to logic circuits: Variables and functions, inversion – Truth tables – Logic gates and Networks – Boolean algebra – Synthesis using gates – Design examples – Optimized implementation of logic functions: Karnaugh map – Strategy for minimization – Minimization of product of sums forms – Incompletely specified functions – Multiple output circuits – Tabular method for minimization – Number representation and arithmetic circuits: Addition of unsigned numbers – Signed numbers – Fast adders.