CAD Standard

CadStd 历史

CadStd（发音为 Cad Standard）由 John Apperson 在 20 世纪 80 年代初期创建。作者希望开发一款廉价的 CAD 程序，因为当时的 CAD 系统非常昂贵。

该软件的早期实验版本运行在 2Mhz、Z80 CPM 系统上，该系统具有 64K RAM，可驱动 Tektronix 4002A 图形终端。该软件被移植到 DOS 并在早期的 IBM PC 上运行。最终，该软件进行了更新，以支持最新版本的 Microsoft Windows。

1987 年 9 月，它在 Byte Magazine 上以“Cadalyst”为广告宣传。在发现有一本同名杂志后，该名称更改为 CAD-STD，后来又更改为 CadStd。公司名称“Computer Graphics Research”最终也更改为“Apperson & Daughters”。

到 1998 年，CadStd 已移植到 Windows 95，版本 1 至 2.03b 均免费提供。由于公众的兴趣和改进要求，CadStd 被拆分为 CadStd Lite（免费版）和 CadStd Pro（廉价版）。

2002 年 2 月，CadStd 被提名参加《Byte》杂志的兰花游行。

2004 年 10 月，《Smart Computing》杂志对 CadStd Pro 进行了评论，并评测了其他几个 3D CAD 程序。尽管 CadStd Pro 不是 3D 应用程序，但它能够将 2D 视图投影到 3D 等距投影中。

到 2009 年，CadStd Pro 比 CadStd Lite 多出十几个功能。CadStd Lite 包含 PDF、Postscript 和 SVG 导出功能，但带有非商业用途水印。 CadStd Lite 与 CadStd Pro 共享相同的代码库，并受益于一些小的改进和错误修复。

CadStd History

CadStd (pronounced Cad Standard), was created by John Apperson beginning in the 1980’s. The author was motivated to produce an inexpensive CAD program because the CAD systems at the time were extremely expensive.

Early experimental versions of the software ran on a 2Mhz, Z80 CPM system with 64K of RAM driving a Tektronix 4002A graphics terminal. The software was ported to DOS and ran on early IBM PC’s. Eventually the software was updated to support the latest version of Microsoft Windows.

In September 1987 it was advertised as “Cadalyst” in Byte Magazine. After it was discovered that there was a magazine by that name the name was changed to CAD-STD and later to CadStd. The company name “Computer Graphics Research” was also eventually changed to “Apperson & Daughters”.

By 1998 CadStd had been ported to Windows 95 and versions 1 through 2.03b were available free of charge. Due to the public interest and requests for improvements, CadStd was split into CadStd Lite (the free version), and CadStd Pro (the inexpensive version).

In Feburary 2002 CadStd was nominated for the Orchid Parade in Byte magazine.

In October 2004 CadStd Pro was reviewed in Smart Computing Magazine with several other 3D CAD programs. Even though CadStd Pro is not a 3D application, it has the ability to project 2D views into 3D isometric projections.

By 2009, CadStd Pro had about a dozen more features than CadStd Lite. PDF, Postscript and SVG export was included in CadStd Lite but with a non-commercial use watermark. CadStd Lite shares the same code base as CadStd Pro and benefits from minor enhancements and bug fixes.