A motherboard (sometimes instead referred to as
the mainboard, system board, baseboard, flattened
board or logic board, or informally,
a mobo) is that the main computer circuit board (PCB) found generally purpose microcomputers and alternative expandable systems. It
holds and permits communication
between several of the crucial
electronic parts of a system, like the central process unit (CPU) and memory, and
provides connectors for alternative
peripherals. not like a
backplane, a motherboard sometimes
contains important sub-systems like the hardware, the chipset's input/output and memory controllers,
interface connectors, and alternative
parts integrated for general
purpose use.
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| MOTHERBOARD |
History:
Prior to the invention of the microchip, a information processing system consisted of multiple computer circuit boards in a very card-cage case with parts connected by a backplane, a group of interconnected sockets. In terribly previous styles, copper wires were the distinct connections between card instrumentation pins, however computer circuit boards shortly became the quality follow. The Central process Unit (CPU), memory, and peripherals were housed on individual computer circuit boards, that were blocked into the armor plate. the ever present S-100 bus of the Seventies is associate degree example of this sort of backplane system.
The most standard computers of the Eighties like the Apple II and IBM computer had revealed schematic diagrams and alternative documentation that allowable fast reverse-engineering and third-party replacement motherboards. sometimes meant for building new computers compatible with the exemplars, several motherboards offered further performance or alternative options and were wont to upgrade the manufacturer's original instrumentality.
Design:
The Octek Felis onca V motherboard from 1993. This board has few aboard peripherals, as proved by the half-dozen slots provided for ISA cards and therefore the lack of alternative intrinsic external interface connectors. Note the massive AT keyboard instrumentation at the rear right is its solely peripheral interface.
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| PALIES |
The motherboard of a Samsung Galaxy SII; the majority functions of the device ar integrated into a awfully tiny board
A motherboard provides the electrical connections by that the opposite parts of the system communicate. not like a backplane, it conjointly contains the central process unit and hosts alternative subsystems and devices.
A typical microcomputer has its microchip, main memory, and alternative essential parts connected to the motherboard. alternative parts like memory device, controllers for computer screen and sound, and peripheral devices is also connected to the motherboard as plug-in cards or via cables; in fashionable microcomputers it's more and more common to integrate a number of these peripherals into the motherboard itself.
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