===== Minicomputers =====

==== Electronic Computer ====
(1946)
Requires High Level Programing Language, Vacuum Tubes
==== Improved Electronic Computer ====
(1949)
Requires Stored Program Theory, Magnetic Drum Memory, ROM

==== Advanced Electronic Computer ====
(1951)
Requires Magnetic Tape Memory
==== Mainframe ====
(1955)
==== Transistor Computer ====
(1960)
==== Electronic Desk Calculator ====
(1961)
==== Industrial Robots ====
(1961)

==== Minicomputer ====
(1965)

===== Related Techs =====
==== Vacuum Tubes ====
(1916)
==== Magnetic Drum Memory ====
(1932)
==== Binary Computing ====
(1937)
Requires Boolean Algebra, Lambda Calculus (see Difference Engine or Electromechanical Computers)
==== Stored Program Theory ====
(1945)
==== Transistors ====
(1947)
==== ROM ====
(1948)
==== Magnetic Tape Memory ====
(1951)