Item containing a paper and a photocopied extract. The undated paper is entitled 'Principles and Operation of Electronic Digital Computer' by Frank Hirst. It provides a history of the development of the electronic digital computer and describes the organisation and operational principles of the computer. There are master sheets of the paper and a copy which is in a fairly fragile condition. Accompanying the paper are master sheets and copies (60 in number) of diagrams related to the operation of the electronic digital computer.

The photocopied extract is from the `Personnel Practice Bulletin', Volume 27, Number 3, September 1971, and is entitled 'A Note on Electronic Computers in Australia - June 1971'. The article summarises an annual census of computers undertaken by the Department of Labour and National Service.

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