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An artist's depiction of a 2000s-era desktop-style personal computer, which includes a metal case with the computing components, a display and a keyboard (mouse not shown). A personal computer, often referred to as a PC, is a computer designed for individual use. [1]
A human computer, with microscope and calculator, 1952. It was not until the mid-20th century that the word acquired its modern definition; according to the Oxford English Dictionary, the first known use of the word computer was in a different sense, in a 1613 book called The Yong Mans Gleanings by the English writer Richard Brathwait: "I haue [] read the truest computer of Times, and the best ...
The history of the personal computer as a mass-market consumer electronic device began with the microcomputer revolution of the 1970s. A personal computer is one intended for interactive individual use, as opposed to a mainframe computer where the end user's requests are filtered through operating staff, or a time-sharing system in which one large processor is shared by many individuals.
The term mainframe computer was created to distinguish the traditional, large, institutional computer intended to service multiple users from the smaller, single-user machines.
The first of three programs written for the machine found the highest proper divisor of 2 18 (262,144), a calculation that was known would take a long time to run—and so prove the computer's reliability—by testing every integer from 2 18 − 1 downwards, as division was implemented by repeated subtraction of the divisor.
Battery-powered portable computers had just a 2% worldwide market share in 1986. [12] However, laptops have become increasingly popular, both for business and personal use. [ 13 ] Around 109 million notebook PCs shipped worldwide in 2007, a growth of 33% compared to 2006. [ 14 ]
A Missouri couple has been charged with child abuse after police claim they performed a circumcision on a child at their home despite not having the medical training to do so.
June 1987: Acorn Archimedes (Europe), launched with an 8 MHz 32-bit ARM2 microprocessor, with between 512 KB and 4 MB of RAM, and an optional 20 or 40 MB hard drive. October 1987: Amiga 500 (N. Am.), Amiga 1000 repackaged into a C64-like housing with keyboard and motherboard in the same enclosure, along with a 3.5" floppy disk drive.