Behavior Modeling Only the functionality of the circuit, no structure No specific hardware intent For the purpose of synthesis, as well as simulation IN1,…,INn IF in1 THEN OUT1,…,OUTn FOR j IN high DOWNTO low LOOP
Combinatorial Logic Combinatorial Logic if – Outputs at a specified time are a function only of the inputs at that time e.g. decoders, multiplexers and adders Output change instantly when input change