History of computing Essay

Way back in early history, when people relied in the first place on their brains to perform calculations, people used their fingers, pebbles, and t exclusivelyy sticks for computing purposes. unlike attempts were made to build general-purpose programmable visualizers from the aforesaid(prenominal) mechanical devices used in calculators. But the problems posed by the lack of technology at the snip were not satisfactorily solved until the introduction of electronic computing techniques in the mid-20th century. Between Pascals invention and around 1820 there were approximately 25 manufacturers of calculating mechanisms wellspring-nigh of them were the work of one man.Few of them worked flop and even less actually reached the manufacturing line. In the mid-19th century Charles Babbage, a prophesier British mathematician at Cambridge University, designed the first computers to perform multistep operations automatically. The technologies were whole mechanical. He called this fi rst computing machine the Difference locomotive, and it was intended to compute and print mathematical tables automatically. The Difference Engine performed only one arithmetic operation addition. Babbage composeed a small portion of his first Difference Engine in 1832, which served as a demonstration prototype.The first widely cognise general-purpose electronic computer was the Electronic Numerical Integrator and electronic computer (ENIAC) that John W. Mauchly and J. Presper Eckert built at the University of Pennsylvania. The primary motivation for the ENIAC was the need to construct ballistic tables for the U. S. Army. Work began on the ENIAC in 1943 and in 1946 it was completed. It was an enormous machine weighing ab come forth 30 tons and filling a 30 by 50 foot room. It contained 1,500 electromechanical relays and over 18,000 vacuum tubes and when it was switched on it consumed 150,000 watts of energy.Despite its enormous size it stored only the equivalent of 80 character s of information. However, it was substantially faster than any previous computer. The idea of storing programs and their data in the same high-speed holding the stored-program concept was first put forth by von Neumann in a publication entitled, First Draft of a Report on the EDVAC (Electronic Discrete Variable Computer). The IAS machine in its boilersuit design is quite modern, and can be regarded as the prototype of most subsequent general-purpose computers.It had the general structure depicted in intention 4. It had a CPU (Central Processing Unit) for executing instructions, a main memory for storing active programs, a secondary memory for backup storage, and miscellaneous input-output equipment. The IBM PC series was introduced in 1981 and quickly became the de facto standard for this class of machine. IBM made a smart finality by making the architecture of the PC open, essence its design specifications were in stock(predicate) to other manufacturers of computers and so ftware.As a result of this decision the IBM PC became very popular and many versions of it, PC clones, were produced by others. many a(prenominal) other significant achievements have occurred in the PC era and pass on to occur with the widespread use of the Internet and networked computers. Here are a few other notable historical achievements having to do with PCs o 1976 The Cray 1 Supercomputer was the first commercially developed supercomputer. It contained 200,000 ICs and was cooled by Freon. o 1977 Apple II computer introduced.o 1979 Commodore fondle released, with 1 MHz computing power, 8K RAM, cassette deck, and 9 monitor displaying monochrome text. o 1979 The compact disk was invented. o 1982 The TCP/IP network communications protocol was established and the Internet was formed as a machine-accessible set of networks using TCP/IP. o 1982 Commodore 64 released, costing secure i?? 595. o 1982 Compaq releases their IBM PC compatible, the Compaq Portable. o 1983 The IBM XT is released. This machine had a 10MB hard disk, 128KB of RAM, one floppy drive, a mono monitor, and a printer, all for i??5000.What a bargain o 1984 Apple Macintosh released. o 1985 Microsoft Windows launched, entirely not really widely used until version 3 in 1990. o 1987 IBM introduced its PS/2 System which was very successful, change over 2 million machines in less than 2 course of studys. o 1989 The World Wide Web (WWW) is invented by Tim Berners-Lee who saw the need for ball-shaped information exchange that would allow physicists to collaborate on research. The Web was a result of the integration of hypertext and the Internet.Hyperlinked pages could not only provide information but could provide transparent access to other pages of information as well as other Internet facilities such as ftp, telnet, Gopher, WAIS, and USENET. The Web started out as a text-only interface but NCSA Mosaic, an early browser, later presented a graphical interface for it and its popula rity exploded as it became accessible to the novice user. The fit of the Web started in earnest during 1993 and in a single year Web traffic increased by 300,000%. o 1990 Windows 3. 0 introduced by Microsoft.This graphical user interface OS offered true multi-tasking, meaning you could predominate multiple programs at the same time. o 1993 The Pentium microprocessor released by Intel. It was only available at that time in 60 and 66 MHz versions. o 1995 Windows 95 operating system released by Microsoft. o 1995 Pentium Pro microprocessor released. o 1997 Pentium MMX (166 and 200 MHz) released. o 1997 Pentium II (233, 266, and 300 MHz) released. o 1998 Windows 98 released. o 1999 Linux, a free alternative operating system to Microsofts Windows, is estimated to be running on over 10 million computers worldwide.