The silicon chip:
The integrated circuit (silicon chip) was conceived by a radar scientist, Geoffrey W.A. Dummer (1909-2002), working for the Royal Radar Establishment
of the British Ministry of Defence, and published at the Symposium on Progress in Quality Electronic Components in Washington, D.C. on May 7, 1952.
He gave many symposia publicly to propagate his ideas.
Dummer unsuccessfully attempted to build such a circuit in 1956.
The integrated circuit can be credited as being invented by both Jack Kilby of Texas Instruments and Robert Noyce of Fairchild Semiconductor 
working independent of each other. Kilby recorded his initial ideas concerning the integrated circuit in July 1958 and successfully demonstrated the
first working integrated circuit on September 12, 1958. Kilby won the 2000 Nobel Prize in Physics for his part of the invention of the integrated
circuit. Robert Noyce also came up with his own idea of integrated circuit, half a year later than Kilby. Noyce's chip had solved many practical
problems that the microchip developed by Kilby had not. Noyce's chip, made at Fairchild, was made of silicon, whereas Kilby's chip was made of
Early developments of the integrated circuit go back to 1949, when the German engineer Werner Jacobi (Siemens AG) filed a patent for an
integrated-circuit-like semiconductor amplifying device  showing five transistors on a common substrate arranged in a 2-stage amplifier
arrangement. Jacobi discloses small and cheap hearing aids as typical industrial applications of his patent. A commercial use of his patent has not
A precursor idea to the IC was to create small ceramic squares (wafers), each one containing a single miniaturized component. Components could then be
integrated and wired into a bidimensional or tridimensional compact grid. This idea, which looked very promising in 1957, was proposed to the US Army
by Jack Kilby, and led to the short-lived Micromodule Program (similar to 1951's Project Tinkertoy). However, as the project was gaining momentum,
Kilby came up with a new, revolutionary design: the IC.
The aforementioned Noyce credited Kurt Lehovec of Sprague Electric for the principle of p-n junction isolation caused by the action of a biased p-n
junction (the diode) as a key concept behind the IC.
See: Other variations of vacuum tubes for precursor concepts such as the Loewe 3NF.
Then we have well documented cases of the development of this chip which includes Moores law being able to predict with suprising accuracy the growth
of computing power.
the next stage is probably either going to be Solid State computing (news.thomasnet.com...
) or maybe the infamous Quantum
Computer. However again like Telecoms/Telegraph there has bee a steady tech tree from even further back. For example until i researched this I had no
idea about the "castle clock" invented back in 1206 no less. Alos if you look the Jump from Tansister to Silicon was on the cards back in the 40's
with digital computing being around since BEFORE WW2. Again predating Corso, who may I say I had no Idea even existed before your post. Despite his
(corso's) inmpressive resume he is not seen as a credible source:
"The book (corso - the Day After Roswell) appeared on the New York Times Best Sellers List for several weeksreceived many unfavorable reviews.
Writing in Skeptical Inquirer, Brad Sparks identified several historical inaccuracies and said the book contained "the tallest Roswell tales to
date". Publishers Weekly described the book as "outlandish", and Library Journal advised, "[Corso's book] is only for the few special
libraries that have made documenting the unconventional a collecting priority." In 2001, The Guardian included the book in its list of "Top Ten
According to Corso, the reverse engineering of these artifacts indirectly led to the development of accelerated particle beam devices,