Self-repairing computers. Signed offprint

1961. Wilkes, Maurice V. Self-repairing computers. Offprint from IRE Transactions on Electronic Computers, EC-10 (March 1961). Unbound single sheet, as issued. Top margin slightly frayed. Signed by Wilkes on the recto. [2]pp., the second blank. 280 x 214 mm. Provenance: Maurice Wilkes. First edition, offprint issue. "Two approaches are possible to the problem of designing circuits which will continue to function correctly even if some of the elements of which they are composed become unserviceable. One is the use of error-correcting coding systems, and the other can be described as 'error detection with repetition.' . . . The second is of general application, whereas the first lends itself best to situations in which information is not destroyed, for example, to the storage and transmission of information" (p. [1]). Wilkes 1999, no. 52. Origins of Cyberspace 1044.