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Also in 2016, Quizlet launched "Quizlet Live", a real-time online matching game where teams compete to answer all 12 questions correctly without an incorrect answer along the way. [15] In 2017, Quizlet created a premium offering called "Quizlet Go" (later renamed "Quizlet Plus"), with additional features available for paid subscribers.
On August 12, 1981, IBM released the IBM Personal Computer. [10] One of the most far-reaching decisions made for IBM PC was to use an open architecture, [11] leading to a large market for third party add-in boards and applications; but finally also to many competitors all creating "IBM-compatible" machines.
The market for personal computers was dominated at the time by Tandy, Commodore, and Apple, whose machines sold for several hundred dollars each and had become very popular. The microcomputer market was large enough for IBM's attention, with $15 billion in sales by 1979 and projected annual growth of more than 40% during the early 1980s.
By 1977 pre-assembled systems such as the Apple II, Commodore PET, and TRS-80 (later dubbed the "1977 Trinity" by Byte Magazine) [44] began the era of mass-market home computers; much less effort was required to obtain an operating computer, and applications such as games, word processing, and spreadsheets began to proliferate.
The storage of computer programs is key to the operation of modern computers and is the connection between computer hardware and software. [7] Even prior to this, in the mid-19th century mathematician George Boole invented Boolean algebra —a system of logic where each proposition is either true or false.
According to an April 2018 market analysis done by Newzoo, PC gaming was the third largest gaming sector behind console and mobile gaming in terms of market share sitting at a 24% share of the entire market. The market for PC gaming continues to grow and is expected to generate $32.3 billion in revenue in the year 2021. [60]
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By the early 1980s, the chaos and incompatibility that was rife in the early microcomputer market had given way to a smaller number of de facto industry standards, including the S-100 bus expansion board, the CP/M operating system, the Apple II home computer, the use of the programming language Microsoft BASIC in read-only memory (ROM), and the 5 + 1 ⁄ 4 inch floppy drive storage medium.