The first true computers were made with intricate gear systems by the Greeks. This important work is the oldest surviving linguistic book and introduced the idea of metarules, transformations, and recursions, all of which have important applications in computer science. In this work he created 3,959 rules of grammar for Indias Sanskrit language. The Indian grammarian Panini wrote the Ashtadhyayi in the 5th Century B.C.E. This device featured a differential gear, later used in modern times to make analog computers in the mid-20th Century. The Chinese developed the South Pointing Chariot in 115 B.C.E.

The abacus was used by many different cultures and civilizations, including the major advance known as the Chinese abacus from the 2nd Century B.C.E. The earliest calculating machine was the abacus, believed to have been invented in Babylon around 2400 B.C.E. is used in more than 300 colleges and universities around the worldįind out how to get similar high web traffic and search engine placement. See also release dates for specific release dates of various operating systems.

The installed base of Mac users reaches 1 million.History of operating systems jump to UNIX history Both machines debut the inclusion of expansion slots in Macs. Along with the Mac II, Apple releases the Mac SE with the classic all-in-one design. 1987Īpple ships the Mac II, the first Mac to eschew an all-in-one design and to support color displays. Later that year, the company releases Windows 1.01. Microsoft licenses some of the Mac's technology in order to develop Office for Mac. The Mac II (photo: Alexander Schaelss, GNU FDL 1.2 license) Some models are converted and sold as the Mac XL. 1985Īfter a power struggle with Apple CEO John Sculley, during which Steve Jobs is stripped of operational responsibilities, Jobs resigns from Apple and founds NeXT Inc. Although unique and innovative, the program fails because too few Macs are initially available, and many are not returned to stores in perfect condition. The Test drive a Mac program is launched, enabling users to take a Mac home from resellers for a 24-hour trial period. The Apple Lisa 2 is introduced for $3,495. The original Macintosh 128k (photo: Marco Mioli, All About Apple, GNU FDL 1.2 license) 1984 It is aired only one other time, during the 1984 Super Bowl. In mid-December, Apple's marketing company airs the now-famous 1984 TV commercial during sign-off in an Idaho market to qualify for the year's advertising awards. Apple's Lisa and Mac divisions are combined.

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