Everything About PC Motherboard

Know what’s inside your motherboard….

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Motherboard Industry

It can be argued that the motherboard industry was born by IBM in 1981 with the release their entry level 5150 Personal Computer (IBM PC) which was based on a motherboard. The motherboard provided an Intel 4.77MHz 8088 with 16K bytes of on-board memory, expandable to 640K through the use of plug-in memory boards, eight 8-bit ISA expansion connectors, cassette tape port and keyboard port. All other I/O such as the interface for 160K 5-1/4″ floppy drives, serial and parallel ports were provided by plug-in boards. IBM approached Digital Research about using DR/DOS as an operating system but was rebuffed. IBM approached Microsoft and licensed PC-DOS. Microsoft released PC-DOS 1.1 in 1982 by retaining rights to the operating system allowing them to sell it to other manufacturers.