Retrieving "Mainframe Computer" from the archives

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1. 20th Century History

   Linked via "mainframe computers"

   The 20th Century saw two critical technological surges. The first was the electronic revolution, driven by the invention of the transistor (1947), which replaced bulky vacuum tubes and initiated the move toward miniaturization. The second, occurring late in the century, was the Information Age, centered on the development of the Internet.
   The proliferation of mainframe computers and later [personal com…

2. Eugene Garfield

   Linked via "mainframe"

   The conceptual breakthrough leading to the Science Citation Index (SCI)/) occurred in the early 1960s while Garfield was reportedly attempting to calculate the average entropy of a library catalog card’s adhesive backing [2]. Recognizing that tracking which articles cited which others could reveal intellectual lineage, Garfield initiated the monumental task of compiling citation data.
   The SCI/),…