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Computation on EDSAC I, 1949-1957

MS. Eng. c. 2396

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The material concerns methods of using the EDSAC machine (Electronic Delay Storage Automatic Computer) for the computation of 2- and 3-dimensional Fourier and Patterson syntheses. Kendrew's early collaborator on this work was J.W. Bennett whom he met at Cambridge through H.E. Huxley and who later worked at Ferranti; they published papers on the topic in Acta crystallogr., 5, 1952 and in the official publication of the Inaugural Conference of the Manchester University Computer, 1951.

Notes and calculations.

Folder C.6. "Miscellaneous programming ideas", n.d. (c.1949), some on verso of contribution to Barcroft volume published in 1949.

Folder C.7. "Two-dimensional low symmetry", n.d., some on EDSAC programme sheets, some on verso of 1948, 1949 publications.

Folder C.8. "EDSAC 2-dimensional Patterson programme", some dated 1950, 1952 and later "modification" by D.W. Green 1955.

Folder C.9. "EDSAC 3-D programme", EDSAC sheets dated 1953, 1954, undated notes.

Folder C.10. "EDSAC 2-dimensional Patterson Fourier programmes". Notes, calculations, programmes and, narratives by Kendrew, D.M. Blow and another, some sheets dated 1954, 1956, 1957.

Folder C.11. Miscellaneous notes, graphs, narratives on Patterson peaks, some dated 1952 and referring to work on Pauling helix calculated by F.H.C. Crick.

Work with J.W. Bennett.

Folder C.12. Notes and calculations (some by H.E. Huxley), short report by Bennett on "EDSAC Crystallographic Computations".

Folder C.13. "Fourier methods", notes, calculations, letter from Bennett, note by another on "probable error in synthesis ..."

Folder C.14. Correspondence, arrangements, drafts, etc. for conferences, papers and publications. Includes Institute of Physics X-ray Analysis Group, November 1950 (Kendrew and Bennett presented a paper on "Some crystallographic calculations with EDSAC"), Symposium on Advanced Techniques in Structure Determination Stockholm July 1951 (Kendrew and Bennett's paper "Crystallographic computations with a high-speed digital electronic computer" was accepted but it is not clear whether they attended), Inaugural Conference of the Manchester University Digital Computer July 1951. Some additional notes and calculations are included.

Related material.

Folder C.15. Research proposal for X-ray Analogue Computer for Crystal Structure Analysis, Pennsylvania 1949-1950.

"The Anisograph", correspondence and information, 1950.

EDSAC order codes.


  • 1949-1957


10 folders

Language of Materials



MS. Eng. c. 2396

Former reference:

NCUACS 11/4/89/C.6-15

Repository Details

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Weston Library
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