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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.
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 or simply computer, is a computer designed for individual use. [1]
3.Top-down processing. Signals are likely perceived and interpreted by what is expected based on a user's experience. If a signal is presented contrary to the user's expectation, more physical evidence of that signal may need to be presented to assure that it is understood correctly. 4.Redundancy gain. If a signal is presented more than once ...
Before the IBM PC was introduced, the personal computer market was dominated by systems using the 6502 and Z80 8-bit microprocessors, such as the TRS 80, PET, and Apple II, which used proprietary operating systems, [2] and by computers running CP/M. [3] After IBM introduced the IBM PC, it was not until 1984 that IBM PC and clones became the ...
This page was last edited on 25 August 2008, at 21:26 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
The PC 1 has no internal room for Harddisk, the "PC 1-20" Harddrive came with a 3.5-inch 20 MB hard drive and can be connected to the expansion port. The machine can also be expanded with the "PC 1-NET" which added a Novell Ethernet 10-bit card connected to the expansion port.
PC DOS 3.1 (released March 1985) fixed the bugs in DOS 3.00 and supported IBM's Network Adapter card on the IBM PC Network. PC DOS 3.2 added support for 3 + 1 ⁄ 2 -inch double-density 720 KB floppy disk drives, supporting the IBM PC Convertible , IBM's first computer to use 3 + 1 ⁄ 2 -inch floppy disks, released April 1986, and later the ...
The Computer and the Brain is an unfinished book by mathematician John von Neumann, begun shortly before his death and first published in 1958.Von Neumann was an important figure in computer science [broken anchor], and the book discusses how the brain can be viewed as a computing machine.