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IBM built the Automatic Sequence Controlled Calculator, an electromechanical computer, during World War II. It offered its first commercial stored-program computer, the vacuum tube based IBM 701, in 1952. The IBM 305 RAMAC introduced the hard disk drive in 1956.
The NeXT workstation was known for its technical strengths, chief among them its object-oriented software development system. Jobs marketed NeXT products to the financial, scientific, and academic community, highlighting its innovative, experimental new technologies, such as the Mach kernel , the digital signal processor chip, and the built-in ...
After 30 years of development, Thomas de Colmar launched the mechanical calculator industry by starting the manufacturing of a much simplified Arithmometer (invented in 1820). Aside from its clones, which started thirty years later, [ 38 ] it was the only calculating machine available anywhere in the world for forty years ( Dorr E. Felt only ...
Developers must pay a yearly $99 fee as part of Apple's Developer Program; [81] if their membership expires, their apps are removed from the App Store, though existing users retain the ability to redownload the app. [82] Developers can release free apps, or paid apps for which Apple takes a 30% cut of proceeds. [83]
Grace Brewster Hopper (née Murray; December 9, 1906 – January 1, 1992) was an American computer scientist, mathematician, and United States Navy rear admiral. [1] She was a pioneer of computer programming.
In the U.S.A., an Apple II is a home computer; the IBM PC in its smaller configurations is a home computer; the Macintosh is a home computer. Home computers use floppy disks for mass storage and perform useful functions like word processing and income tax preparation as well as playing games.
The same year, Nokia announced the acquisition of Trolltech and its Qt software development. [80] Qt was a central part of Nokia's strategy until 2011, and it was eventually sold in 2012. [81] Nokia briefly returned to the computer market with the Booklet 3G netbook in August 2009.