motherboard

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motherboard

[′məth·ər‚bȯrd]
(computer science)
A common pathway over which information is transmitted between the hardware devices (the central processing unit, memory, and each of the peripheral control units) in a microcomputer.

motherboard

(hardware)
(mobo) The main printed circuit board in an electronic device, particularly a computer, which may contain sockets that accept additional boards ("daughter-boards").

In a personal computer, the motherboard contains the bus, the microprocessor, and integrated circuits used for controlling any built-in peripherals such as the keyboard, text and graphics display, serial ports and parallel ports, joystick, and mouse interfaces.

motherboard

Also called the "system board," "main board" "base board" or "logic board," it is the primary printed circuit board in a computer or other electronic device. In a modern desktop computer, the motherboard contains the CPU and RAM sockets as well as the chipset, which houses the control circuits for all the peripheral devices (drives, keyboard, mouse, etc.). A motherboard typically also has a PCI-Express slot for a high-end graphics card and PCI slots for additional peripherals. Laptop motherboards do not have expansion slots for more peripherals.

Wanna Sound Cool?
Every now and then, say "mobo" instead of motherboard, and you will be a "cool geek." See CPU, chipset, PCI Express, PCI and controller.


PC Motherboard
This earlier Baby AT style motherboard required plug-in expansion cards for almost all the peripheral devices. The ISA slots are long gone, and the AGP slot was replaced with PCI-Express.







Expansion Cards
On earlier PCs, expansion cards were required for almost all peripheral devices except keyboard and mouse. Today, enthusiasts may plug in a faster graphics card, but most peripheral control circuits are already on the motherboard.







The Mother of All Motherboards
This is the front and back of the prototype of the first IBM PC motherboard in 1981. The chips are wired together on a "breadboard." (Images courtesy of IBM.) See breadboard.


The Mother of All Motherboards
This is the front and back of the prototype of the first IBM PC motherboard in 1981. The chips are wired together on a "breadboard." (Images courtesy of IBM.) See breadboard.
References in periodicals archive ?
Crumple up newspaper (The Journal makes great models!) and glue them to the base board - you can make hills, caves, cliffs - anything you fancy.
Cut an inch-long notch into the bottom of the rear base board wide enough to run the cord through.
First drill both boards to match the hooks on the base board. Make three cranks with a hook on the end.
User LEDs, a button and a switch allow for a physical board interface, while JTAG circuitry is incorporated onto the MiniZed base board. Tutorials, which will be available for download at http://minized.org, use the on-board microphone as an example input to demonstrate how to easily implement filters and FFTs in the fabric.
i) Base board with motor drive assembly with two drums and tank
Tenders are invited for Article 09G2S / 25 category 6 in accordance with GOST 19281; 13Mn6DIN17145 / C25E EN10025-2004 profile bead rim base 51 / 5.0-3101023 (Annex 2), the profile of the ring landing a removable 51 / 5.0-3101035 (Annex 4), the profile of the rim base board 57 / 6.0-3101023 (Annex 3), the ring profile of planting a removable 57 / 6.0-3101035 (Annex 5).
Limited Tenders are invited for Procurement Of Base Board Of Pcc-2100 Of Stage-Ii Dg Set
Tenders are invited for Article 09G2S / 25 category 6 in accordance with GOST 19281; 13Mn6DIN17145 / C25E EN10025-2004 profile bead rim base 51 / 5.0-3101023 within a quantity of 280 tons, including pilot batch in the count ve 20tn (Annex 2), the profile of the ring landing a removable 51 / 5.0-3101035 within a quantity of 180 tons, including pilot batch in the count ve 20tn (Annex 4), the profile of the rim base board 57 / 6.0-3101023 within a quantity of 30 tons (Annex 3), the profile of landing a removable ring 57 / 6.0-3101035 within a quantity of 20 tonnes (Annex 5 )
The kit contains a mangOHTM Green Base board, as well as a WP8548 module with Cortex A5 application processor, GNSS receiver and 3G modem, socket cover and release tool, two Breakout Board IoT Connectors, a power supply unit, antennas and USB cable.
Work generally includes: furnishing all labor, materials, tools, equipment, transportation, and services necessary to perform the construction and installation of the following: selective demolition, storefront doors and windows, gypsum board, acoustical insulation and sealants, plaster and tile finishes, interior painting, carpeting and base board repair, signage, hvac modifications, electrical work.
Replace all post caps for all deck railing refinish, sand, stain and seal deck around main building paint stairs , treads and risers for all deck stairs paint interior base board and various openings and doors.
Interior finishes include carpeting, resilient flooring, hard tile, vinyl base board, painted and wallpapered gypsum board walls, gypsum board and suspended acoustical tile ceilings, and millwork.