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Developed an early fully transistorized computer, the Mailüfterl. Crucial in the creation of the formal definition of the programming language PL/I. 1938, 1945 Zuse, Konrad: Built the first digital freely programmable computer, the Z1. Built the first functional program-controlled computer, the Z3 in 1941. [59]
R2E CCMC Portal laptop. The portable microcomputer "Portal", of the French company R2E Micral CCMC, officially appeared in September 1980 at the Sicob show in Paris.The Portal was a portable microcomputer designed and marketed by the studies and developments department of the French firm R2E Micral in 1980 at the request of the company CCMC specializing in payroll and accounting.
According to the IEEE Annals of Computer History, the MCM/70 is the earliest commercial, non-kit personal computer. [32] IBM 5100: 1975: An early portable computer with integrated monitor; the 5100 was possibly one of the first portable microcomputers using a CRT display. Sphere 1: 1975: A personal computer that was among the earliest complete ...
Had Turing's ACE been built as planned and in full, it would have been in a different league from the other early computers. [52] Later in the 1950s, the first operating system, GM-NAA I/O, supporting batch processing to allow jobs to be run with less operator intervention, was developed by General Motors and North American Aviation for the IBM ...
The Computer History in time and space, Graphing Project, an attempt to build a graphical image of computer history, in particular operating systems. The Computer Revolution/Timeline at Wikibooks "File:Timeline.pdf - Engineering and Technology History Wiki" (PDF). ethw.org. 2012. Archived (PDF) from the original on 2017-10-31
It was a preliminary version of the full ACE, which had been designed by Alan Turing. Aug 1950: US SWAC (Standards Western Automatic Computer) demonstrated at UCLA in Los Angeles; fastest computer in the world until IAS machine. Sep 1950: GER Konrad Zuse leased his Z4 machine to the ETH Zurich for five years. Z4 was a relay-based machine.
This is considered to be the first example of a true computer program, a series of instructions that act upon data not known in full until the program is run. Following Babbage, although unaware of his earlier work, Percy Ludgate [14] [15] in 1909 published the 2nd of the only two designs for mechanical analytical engines in history. [16]
A few of these people pre-date the invention of the digital computer; they are now regarded as computer scientists because their work can be seen as leading to the invention of the computer. Others are mathematicians whose work falls within what would now be called theoretical computer science, such as complexity theory and algorithmic ...