Repair invoice from Philips Electrical Industries Pty. Ltd. charged to Dr Trevor Pearcey of the Melbourne University Department of Mathematics.

Dr Pearcey was a pioneer in the field of electronic computing in Australia. He designed the computer CSIR Mark 1, later known as CSIRAC, while working for the Commonwealth Council for Scientific and Industrial Research (CSIR) in Sydney in the 1940s. He also held a variety of academic positions in computing.

CSIRAC was built by the CSIR in Sydney in 1949 and was the fourth computer in the world. It was later transferred to the University of Melbourne. Designed by Trevor Pearcey and engineered by Maston Beard, CSIRAC completed more than 1000 projects by the time it was turned off in 1964. It is currently housed at Museum Victoria.

Physical Description

Invoice printed on one side of a sheet of white paper in black ink. The invoice number is printed in red in the upper right corner. Sections handwritten in blue ink pen, including the sum total in the lower right corner. A green stamp is adhered in the centre.

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