Minutes and notes of meetings, with papers and reports on various aspects of the micro-instruction code for the 502, some annotated by Strachey; brief correspondence regarding meetings is sometimes included from Roger L. Cook (Technical Services Manager, Computer Centre, Elliott Brothers).

The material relates to meetings on 6, 20 January, 10, 17, 24, 29 February 1960.

Strachey advised the firm on the Order Code for the Elliott 502 Computer.