 Hauser employed a deception, telling both Wilson and colleague Steve Furber that the other had agreed a prototype could be built within a week.Taking up the challenge, she designed the system including the circuit board and components from Monday to Wednesday, which required fast new DRAM integrated circuits to be sourced directly from Hitachi.By Thursday evening, a prototype had been built, but the software had bugs, requiring her to stay up all night and into Friday debugging.