Eckert, Wallace J.. "The IBM Pluggable Sequence Relay Calculator". Washington DC: National Research Council, 1948. 1st edition. Mathematical Tables and other Aids to Computation, III/23 Original printed wrappers. Nice copy. The original owner has rubberstamped his name twice on the front cover, at high top and low bottom. $650 (See this description at Columbia.)
The contents of this issue includes: W. J. E. The IBM Pluggable Sequence Relay Calculator . . . 149--161 Herbert F. Mitchell, Jr. Inversion of a Matrix of Order $38$ . . 161--166 Herbert E. Salzer Coefficients for Expressing the First Thirty Powers in Terms of the Hermite Polynomials . . . 167--169 Anonymous Technical Developments (in Automatic Computing Machinery) . . . 206--206 R. E. Clippinger Airflow Problem Planned for the ENIAC (in Automatic Computing Machinery; Discussions) . . .. 206--207 Bruce L. Hicks and H. G. Landau Nonlinear Parabolic Equations (in Automatic Computing Machinery; Discussions) . . . 207--208 John V. Holberton Laminar Boundary Layer Flow in a Compressible Fluid (in Automatic Computing Machinery; Discussions) . . . 208--208 Joseph H. Levin On the Approximate Solution of a Partial Differential Equation on the Differential Analyzer (in Automatic Computing Machinery; Discussions) . . . 208--209 M. Lotkin Computation of the Airflow about a Cone Cylinder (in Automatic Computing Machinery; Discussions) . . . 209--210 Anonymous A New Class of Computing Aids (in Other Aids to Computation) . . . 217--221 Anonymous Corrigenda . . . 227--227
A description of the special-purpose wartime punched-card calculators originally developed by IBM for the United States Army. "The first two machines of this type were built during the war for the Aberdeen proving ground and were delivered in December 1944, in operation during the last eight months of the war. For comparison with the I.B.M. Sequence Controlled Calculator at Harvard this machine is limited in internal storage capacity, number of significant figures, and flexibility of sequencing; on the other hand, multiplying speed is about twenty times as great." Hook and Norman, 579.
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