Sinclair Cambridge pocket calculator, by Sinclair Radionics Limited, Cambridgeshire, England, 1973 Sinclair Cambridge pocket calculator Computing & Data Processing 1973
End plate assembly for a battery of mercury delay tubes from EDSAC 1, 1946-1958 Computing & Data Processing 1946-1948
Stack assembly processor unit from S3L Estriel mainframe computer Computing & Data Processing 1986; 1986