ASTAP

ASTAP (Advanced Statistical Analysis Program) [1] was a general purpose analog electronic circuit simulator developed primarily for in-house use by IBM from 1973 [2] on. It was a powerful program used for simulation of integrated circuit designs, and their analysis with statistical variations of the manufacturing process. In combination with the built-in Monte Carlo method capabilities it allowed prediction of the performance of electronic circuits under a wide range of material parameters and temperatures. ASTAP was designed to run on IBM Mainframe computers. Its algorithms were developed by IBM electrical engineers, especially Robert Brayton, Gary Hachtel, and Fred Gustavson.

Unlike SPICE, which used Modified nodal analysis (MNA) to form the system of circuit equations, ASTAP instead used sparse tableau approach[3] (STA) to construct and solve a sparse matrix. The sparse tableau formulation produced very large, very sparse matrices which required special techniques to solve efficiently, even at that time. The advantage of STA for statistical analysis is that, as originally outlined, a subsequent analysis of a circuit with randomly varied parameters only required changing entries in the matrix.

References

  1. ^ "ASTAP -- Advanced statistical analysis program," IBM Program Product Document SH20-1118-0, IBM Data Processing Div., White Plains, NY, 1973
  2. ^ Weeks, W.; Jimenez, A.; Mahoney, G.; Mehta, D.; Qassemzadeh, H.; Scott, T. (November 1973). "Algorithms for ASTAP--A network-analysis program". IEEE Transactions on Circuit Theory. 20 (6): 628–634. doi:10.1109/tct.1973.1083755.
  3. ^ Hachtel, G.; Brayton, R; Gustavson, F. (January 1971). "The Sparse Tableau Approach to Network Analysis and Design". IEEE Transactions on Circuit Theory. 18: 101–113. doi:10.1109/TCT.1971.1083223.

This simulation software article is a stub. You can help Wikipedia by adding missing information.

Content Disclaimer

Informasi ini disarikan dari Wikipedia dan disajikan kembali untuk tujuan edukasi. Konten tersedia di bawah lisensi CC BY-SA 3.0. Kami tidak bertanggung jawab atas ketidakakuratan data yang bersumber dari kontribusi publik tersebut.

  1. The information displayed on this website is sourced in part or in whole from Wikipedia and has been adapted for the purpose of restating it. We strive to provide accurate and relevant information, however:
  2. There is no guarantee of absolute accuracy. Wikipedia is an open, collaborative project that can be edited by anyone, so information is subject to change.
  3. It is not intended to constitute professional advice. The content displayed is for informational and educational purposes only. For important decisions (e.g., medical, legal, or financial), please consult a professional.
  4. Content copyright. Wikipedia is licensed under the Creative Commons Attribution-ShareAlike License (CC BY-SA). This means that content may be reused with appropriate attribution and shared under a similar license.
  5. Responsible use. Any risk arising from the use of information from this website is entirely the responsibility of the user.