VHDL（超高速集成電路硬件描述語言）目前在電子設計領域得到了廣泛的應用。但是，實現同樣的系統功能，不同的電路設計師可以采用不同的實際方法，這樣就存在一個電路復雜程度的問題。因此，有必要深入討論在VHDL 設計設計、應用中如何簡化實際電路，達到優化設計的要求。影響電路復雜程度的主要因素有：不同的語言描述方法、邏輯設計的合理性、 VHDL 語句的運用靈活程度和設計規劃的優劣程度。為盡可能簡化電路設計，可以采用：避免不必要的寄存器描述、分解邏輯電路以減少占用面積、用集成度高的電路語言直接表述和采用最簡單、優化的設計方案。
關鍵字:VHDL 語言電路設計 優化
Abstract: VHDL was widely used in electronic design field today. However, to
realize the same system function, different circuit designer may adopt different
method, there is a problem of complexity in circuits. Therefore, it is essential to study
how to predigest actual circuit and achieve optimized design in VHDL. There are
some key factors to affect the complexity in circuit: different language design
method、rationality in logistic design、use VHDL flexiblely and different design
layout. In order to predigest circuit design, it is adopted as follows: avoid unnecessary
register design、decompose logistic circuit to reduce occupied area、use direct
integrate circuit language and adopt simplest and the most excellent design method.
Key words: VHDL language、Circuit design、Optimization