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The structured computer-aided logic design (SCALD) software was a computer aided design system developed for building the S-1 computer. It used the Stanford University Drawing System (SUDS), and it was developed by Thomas M. McWilliams and Lawrence Curtis Widdoes, Jr. The work led to the start of the Valid Logic Systems company (briefly known as SCALD Corporation) in 1981, which was purchased by Cadence Design in 1991.

McWilliams and Widdoes won the W. Wallace McDowell Award in 1984 for the SCALD methodology.

See also

• Static timing analysis

References

1. Smotherman, Mark. "S-1 Supercomputer (1975-1988)". Retrieved 17 February 2024.
2. Thomas M. McWilliams & Lawrence Curtis Widdoes: 1984 W. Wallace McDowell Joint Award Recipients, IEEE Computer Society, archived from the original on 25 November 2010

• Stump, Holly; McWilliams, Tom; Widdoes, Curt (February 12, 2008), SCALD Oral History: #1 of 3 (Tom McWilliams and Curt Widdoes Together) (PDF), Mountain View, CA: Computer History Museum, archived from the original (PDF) on July 8, 2010
• Stump, Holly; Widdoes, Curt (February 12, 2008), SCALD Oral History: #2 of 3 (Curt Widdoes Alone) (PDF), Mountain View, CA: Computer History Museum, archived from the original (PDF) on July 8, 2010
• Stump, Holly; McWilliams, Tom (February 12, 2008), SCALD Oral History: #3 of 3 (Tom McWilliams Alone) (PDF), Mountain View, CA: Computer History Museum, archived from the original (PDF) on July 8, 2010

• v
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• Electronic design automation
• Lawrence Livermore National Laboratory
• Computer-aided design stubs