Shopping Cart Shopping Cart 0 items
info@oldcomputerbooks.com
Item Details
The IBM Pluggable Sequence Relay Calculator, reprint from Mathematical Tables and Other Aids to Computation, III, Number 23, July, 1948. W. J. Eckert.

The IBM Pluggable Sequence Relay Calculator, reprint from Mathematical Tables and Other Aids to Computation, III, Number 23, July, 1948.

MTAC, July 1948, printed by Lancaster Press, PA, n.d., pp. 149-161 inclusive, diagrams, references.
Condition: Very Good, olive-green heavy paper covers, three-hole punched at margin, staples secure, light edgewear and light fading along margins. Faded pencil marks on one figure (table), otherwise pages clean and unmarked.
Price: $75.00
Item no. R336
Item Description
The first two machines of this type were built during the war for the Aberdeen Proving Ground, were delivered in December 1944 and were in operation during the last eight months of the war.... The machine reads numbers from punched cards, performs a sequence of calculations on them by means of relay networks, and punches the results in cards. The calculating unit is the fastest relay unit that has been announced (November 1947)... (from the Introduction).