18. Creating write-only memory, April 1, 1973
It would be hard to imagine a purpose for write-only memory, which allows information to be stored but never retrieved. But on April 1, 1973, Signetics, a California based manufacturer of integrated circuit chips founded in 1961, announced that they had successfully developed write-only memory in a press release. A spokesperson for the company, Roy L. Twitty, called the innovation a major achievement which would have a beneficial effect on the lives of all who ever used computers. Signetics included technical data sheets describing the memory as part of the press release, comprised of meaningless diagrams and equations.
The concept became an inside joke within the industry, and was expanded upon by other manufacturers and engineers, including Apple, which included references to it in their reference manual for the Apple IIe computer in 1982. Apple claimed that the concept of write-only memory was developed under a government contract in 1975, and that it had been criticized as a “six-million dollar boondoggle” but that the device allowed for the storage of “excess information”, and thus saved millions of dollars by freeing up conventional memory storage systems for other uses. The concept remains an allusion to a totally worthless device or idea.