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Design of Mercury Delay Lines, by Sharpless, T K 'Kite' ; in, Electronics, November 1947, whole separate issue. electronics magazine, mercury delay line memory, 1947, Sharpless.

Design of Mercury Delay Lines, by Sharpless, T K 'Kite' ; in, Electronics, November 1947, whole separate issue.

McGraw-Hill NY 1947; 292 pages, triple-column text for articles; index of advertisers; photographs.
Condition: Good+ overall, wear along extremities & along spine, esp. at bottom of spine title; upper corners bent & some creased; binding is tight, pages are clean & unmarked with 2 rubber-stamps of prev. owner's name on spine & table of contents; 1 advert page torn.
Price: $175.00
Item no. C06293
Item Description
Sharpless' article from pages 134 - 138 inclusive, includes black & white photographs of the mercury delay lines in the EDVAC (4 photos total), plus a flowchart and a circuit diagram of 'a complete unit as set up in the laboratory'.

'Experience with large scale computing machines indicates that the most important problem to be solved in their design is that of providing high speed information storage. Moreover, if a suitable low cost memory can be developed, all information, both numerical data and routine instruction, may be stored in the same medium and, indeed, in the same organ. If such a memory were provided, the question of how much problem and routine storage must be provided reduces to the question of how much total storage is required.

In addition, a single organ for all storage opens the possibility for the machine to perform logical and arithmetical operations on its own instruction, thus greatly increasing its generality. The mercury line provides such storage at a cost of approximately ten cents per binary digit.' (from the article, pp 135-136)

Sharpless was the Chief of the Digital Computer Section, Moore School of Electrical Engineering at the University of Pennsylvania

Thick magazine also contains articles on Console for Dubbing (control console for mixing up to nine sound channels to make the final sound-on-film track at Reeves Sound Laboratories NY); Measuring Pressures of Industrial Explosions (Thompson & Cousins); Electronic Computer for Printing Control (Ludwig; electronic-hydraulic control system triples speed of a multicolor printing press; servomechanisms); Electromechanical D-C Amplifier (Roper & Engelberger); Producing Tube Curves on an Oscilloscope (Webking); F-M Chain Broadcasting; Interconnecting Facilities for Television Broadcasting (Bloecker); plus advertisements and regular columns.