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  • The Cambridge CAP computer was the first successful experimental computer that demonstrated the use of security capabilities, both in hardware and software. It was developed at the University of Cambridge Computer Laboratory in the 1970s. As well as being a research machine, it also served as a useful service machine, unlike most research machines of the time. The sign currently on the front of the machine reads: The CAP project on memory protection ran from 1970 to 1977. It was based on capabilities implemented in hardware, under M.Wilkes and R.Needham with D.Wheeler responsible for the implementation. R.Needham was awarded a BCS Technical Award in 1978 for the CAP Project.