Memory cell

A robot duplicate of the First Doctor contained memory cells which were fed with data from the computer of a Dalek time machine. (TV: The Chase)

Sarah Jane Smith described the Xylok crystal that would become Mr Smith as the memory cell of an alien spacecraft. (TV: The Lost Boy)

Behind the scenes

 * According to NOTVALID: Inside a Dalek, the advanced Grey Dalek casing contained several types of memory cells to store data and retrieve it quickly, including the combat computor and the photo-sonic cells.