Computer science from the publisher heres the new second edition of the authoritative reference engineers need to guide them through the use of vhdl hardware description language in the analysis simulation and modeling of complicated microelectronic circuits. Vhdl analysis and modeling of digital systems zainalabedin navabi northeastern university mcgraw hill inc new york st louis san francisco auckland bogota caracas lisbon london madrid mexico milan montreal new delhi paris san juan singapore sydney tokyo toronto contents preface xvu hardware design environments i 11 digital system design process 1 111 design automation 3 12 hardware . While some vhdl texts try to explain everything about vhdl other books like dr navabis explain the more useful parts of vhdl as being used by a digital systems or asic designers while other books are mostly for rtl coders with very little testbench and system level modeling info in my opinion test is extremely important as well as modeling at the system level many books out there do not . Vhdl an architecture can be written in one of three basic coding styles 1 dataflow 2 behavioral 3 structural the difference between these styles is based on the type of concurrent statements used a dataflow architecture uses only concurrent signal assignment statements