2.1 History of VHDL2.2 Comparison Between VHDL and Verilog2.3 Features of VHDL2.4 Basic Terminologies of VHDL2.5 Levels of Hardware Abstraction2.5.1 Overview2.5.2 Entity Declaration2.5.3 Architecture Body2.5.4 Styles of Modelling2.5.5 A Simple Coding Example in VHDL2.6 Delay Models in VHDL2.6.1 Inertial Delay Model2.6.2 Transport Delay Model2.6.3 Delta Delay Model2.6.4 Differences Between Inertial Delay and Transport DelaySummaryQuestions