The KDF9 was a Very High Speed Data Processing System for Commerce (September 1962 )

Quote from the publication:
"KDF9 is the outcome of many years' experience accumulated by 'English Electric ' as designers, manufacturers, and users of computers, the Company being one of the pioneers in the field in Britain. In the early post-war years 'English Electric ' co-operated with the National Physical Laboratory in the development of the " ACE " Pilot Model, one of the first electronic digital computers made in the United Kingdom. The Company then proceeded with the development and production of a fully engineered computer which was to set new standards of speed and capacity. Great interest was shown in this undertaking and, literally at the drawing board stage, the Company was asked to build one each for the National Physical Laboratory and the Royal Aircraft Establishment, Farnborough.

The new machine, which was named " DEUCE," was an immediate success and soon became widely known as the most powerful and advanced computer of its type. Successive marks were developed to meet the demand for increased speed and storage, all of which give the utmost satisfaction to their users. As the use of computers became more widely known and appreciated there came increased demands for computers of much greater speed and capacity, and 'English Electric ' addressed themselves to the task of meeting these demands. A computer manufacturing division was established at Kidsgrove, North Staffordshire, and is now known as the Data Processing and Control Systems Division. From its inception the division has continuously expanded and produces 3a wide variety of analogue and digital computers and ancillary equipment.These include the " LACE " series of analogue computers, multi-point scanners."DATAPAC " systems of logical elements for process control and datahandling, the KDPlO large-scale commercial data processing system, and now :the KDF9 general purpose computer for commerce, industry, and science."

This is a lavishly illustrated 28 page A4 publication Ref: DP/116XG/F and was kindly donated by Malcolm Rogers