EMI Electronic Business Machine Description

The EMI EBM or CP407 (Commercial Poject 407) as it was known at EMI was delivered to BMC Longbridge in April 1958.

This was used for Austin and BMC wages and payroll including some costing.

The machine had five small magnetic tape decks and magnetic drum for memory.

EMI's Scophony Baird factory at Wells produced a modified domestic tape deck system tailored to the BMC machine.

The magnetic drum fast store was also supplied by Wells.

This computer was a one of a kind valve machine with some usage of core-transistors in the input/output circuits.