milliseconds. With the basic system up and running, attention turned to a "full sized" version. This machine would use a 44-bit word with 1,024 words of memory backed up with a 10,000 word magnetic drum to be supplied by Ferranti Canada. A new math unit would operate on an entire word in parallel, instead of bit-serial as with most machines of the era, dramatically improving performance so that an addition would take only 20 microseconds and a multiply about 200—faster than the prototype at addition even on its much smaller word size. Success of the UTEC created intense demand within the Canadian research establishment to start construction of the full scale follow-on. The funding pool was increased to $300,000 to cover development and construction. FERUT While UTEC was being built, a similar machine was under construction at Manchester University, known as the "Baby". Once it started working the university signed an agreement with Ferranti (in the UK) to build a full-scale machine eventually known as the Mark I. The new machine was delivered to the university in February 1951, making it the first commercial computer, about one month earlier than the UNIVAC I was handed over to the US Census Bureau. Ferranti had high hopes for further sales of the machine, and were happy when an order was placed by the British Atomic Energy Authority for delivery in autumn of 1952. However the government changed hands while the machine was being built, and all government contracts over £100,000 were cancelled outright. This left a partially completed Mark I sitting at Ferranti, who became interested in unloading it as soon as possible. Word of the machine quickly reached the AECL, who suggested that they use the $300,000 set aside for the "new" UTEC to purchase the Mark I instead. The Computation Center considered the Mark I to be inferior to their own design and rejected it, notably because it used a serial math unit like their prototype and would thus be much slower. The AECL was not terribly impressed but came up with a solution; if the Computation Center would buy the Mark I, another $150,000 would be made available to continue development of the UTEC, and an equal amount if they decided to actually build it. This sort of deal one does not refuse, and plans to ship the Mark I to Toronto were soon underway. The machine arrived on