忙碌的范围:本美国宇航局技术手册的目的是帮助设计工程师使用良好实践，以产生高质量的设计，最大限度地减少错误，并产生可维护和可审查的描述。本手册介绍了一种称为超高速集成电路（VHSIC）硬件描述语言（VHDL）的硬件描述语言。可公开访问。美国宇航局认可。OCE。

Active.Scope: The purpose of this NASA Technical Handbook is to aid the design engineer in using good practices to produce quality designs, minimize errors, and produce a description that is maintainable and reviewable. This Handbook covers a hardware description language called very high-speed integrated circuit (VHSIC) hardware description language (VHDL).Publicly Accessible.NASA Endorsed.OCE.