Hollerith 45 column horizontal electrical sorting machine, 1920-1930 Computing & Data Processing 1920-1930
End plate assembly for a battery of mercury delay tubes from EDSAC 1, 1946-1958 Computing & Data Processing 1946-1948
'Message Cam' mobile phone accessory with connector cable, 1999-2001 Computing & Data Processing 1999-2001
Main portion of short mercury delay tube from the electronic computer EDSAC, 1946-1958 Computing & Data Processing 1946-1958