Computer bus is a subsystem that transfers data between components inside a computer or between computers.

  1. Bus Slots In Computer Screen
  2. Computer Slot Games For Sale

Modern computer buses can use parallel and bit-serial connections, and can be wired in either a multidrop (electrical parallel) or daisy chain topology, or connected by switched hubs, as in the case of USB.

Devices connect to these parallel buses with cables to controller cards that plug into slots on the motherboard. Another common bus is USB, and devices are cabled to ports on the computer.


(2) In a computer, a bus is the data path on the computer's motherboard that interconnects the microprocessor with attachments to the motherboard in expansion slots (such as hard disk drives, CD-ROM drives, and graphics adapters). This was last updated in September 2005. Alternatively referred to as a bus slot or expansion port, an expansion slot is connection or port located inside a computer on the motherboard or riser board that allows a. The bus architecture belongs to a slotted-ring class. 32-bits of data, l4-bits address, and signalling buses span across a maximum of sixteen processors configured in a ring. We found this card worthwhile during our 1-week stay. One caveat: they have a limited number of reserved slots at Van Gogh. We had to make separate reservations/pay for admission. Transportation on trams, buses, metro, as well as admission to multiple museums, canal tour made it.

Forward to / Apple / obsolete / obsolete computers / Sun pinouts or follow to 17 MODERN hardware pinouts.
See also RS-232 and other serial ports and interfaces pinouts
  • ACR (Advanced Communications Riser)Advanced Communications Riser (ACR) is a slot for connecting a specific hardware, such as AMR hardware, Cable Modem, DSL, Wireless, HomePNA, Ethernet, etc. This slot is a successor to AMR (Audio Modem Riser).
  • AGP interfaceAGP (Accelerated Graphics port) is a modified version of PCI bus designed to speed up transfers to video cards.
  • ISA busISA=Industry Standard Architecture
  • JAMMAJAMMA=Japanese Arcade Machine Manufacturers Association
  • PC Card ATA busThis specification makes it possible to share ATA & PC Card with the same connectors.

Apple Pinouts

  • ADB Apple Desktop BusADB is a low-speed serial bus used on Apple Macintosh computers manufactured in 1986-1999. It's used to connect input devices (such as the mouse or keyboard) to the CPU
  • Apple Communication SlotAvailable on Apple Macintosh 575, 630, 5200 5300 and Apple Performa 6200CD, 6300 series
  • Apple Communications Slot IIApple Communications Slot II (PCI Bus Communications Slot)
  • Apple II slotExpansion Slot Connector for the Apple II Series Interface/Add On Cards
  • Apple IIe I/O slot
  • Apple Macintosh portable Processor-Direct Slot (PPDS)
  • Apple Macintosh Processor-Direct Slot (PDS)Available on Apple Macintosh SE/30 & IIfx
  • NuBusNuBus is a 32-bit parallel computer bus, originally developed at MIT as a part of the NuMachine workstation project, and eventually used by Apple Computer and NeXT Computer.
  • NuBus 90Available on old Apple Macintosh computers. NuBus with clock rate 20 MHz.

obsolete Pinouts

  • Communication and Networking Riser (CNR)The CNR connector is the interface between the motherboard and the CNR board. The connector provides all of the necessary signals to support several different configurations of audio, modem, and/or LAN subsystems in the system
  • EISA busThis file is intended to provide a basic functional overview of the EISA Bus, so that hobbyists and amateurs can design their own EISA compatible cards.
  • ElectrocoinThe Electrocoin standard was introduced before JAMMA (Japanese Arcade Machine Manufacturers Association) to allow various games to be connected to generic cabinets such as Silverline and Goliaths.
  • MCA 16 bit bus
  • MCA 32 bit busplus MCA memory-matched extensions, MCA AVEC Auxiliary Video Extension Connector
  • VESA LocalBus (VLB)VLB=VESA Local Bus. VESA=Video Electronics Standards Association.
Bus Slots In Computer

obsolete computers Pinouts

Bus Slots In Computer Screen

  • +4 User portAvailable on Commodore +4 computer.
  • Amiga 1000 Ramex
  • Amiga 1200 CPU-port
  • Amiga Expansion Bus A.K.A Zorro IThese are the connections found at the side of the Amiga 1000 and Amiga 500 computers. They are electric and mechanical compatible with the single exception of being rotated 180 degrees looking at it from the top of the PCB this can cause trouble connecting a expansion meant for the A1000 into the A500 and vice versa. This Bus is like most Buses at this time a extension on the CPU Bus.
  • Amiga Expansion Bus Zorro IIThese are the connections found at the side of the Amiga computers. This Bus is like most Buses at this time a extension on the CPU Bus.
  • Amiga Expansion Bus Zorro II/III
  • C-bus IIDeveloped by Corolla. C-bus II is the successor to C-bus & Extended C-bus.
  • CD32 Expansion-port
  • Commodore 64 / 128 User I/O
  • ECB busThe ECB-bus was defined in 1984 by the german company KONTRON. It was defined of 100x160mm-europa-card and used 2x32 pins (row a and c). Later the third (middle) row of pins was defined for 16-bit-systems. Such bus uses all 3x32pins.
  • STEbus STEbus (IEEE-1000)
  • UnibusAvailable on the old Digital PDP-11

Sun Pinouts

  • SUN SBusSBus is a computer bus system that was used in most SPARC-based computers from Sun Microsystems during the 1990s

The PCI expansion slot was introduced by Intel, but can be found in both PC's and Macs. It displaced previous computer buses (VESA Local Bus and ISA). PCI was then succeeded by the PCI-E or (PCI Express slot), but PCI is still found in most computers because many expansion devices don't need PCI-E capabilities.

It is also possible to get a PCI card that had more PCI expansion slots on it. This would be helpful for a computer that did not have enough PCI expansion slots for further expansions, although most computers would have an ample amount of slots.

When choosing a computer case, it is a good idea to choose a case that will allow for a bigger enough case so as to have a suitable amount of PCI expansion slots. This can be very useful if you want to add some cards later, such as a wireless card, or some more USB slots, or a TV tuner?

PCI Slots
PCI Express
PCI Express (Peripheral Component Interconnect Express), officially abbreviated as PCIe, is a high-speed serialcomputerexpansion bus standard designed to replace the older PCI, PCI-X, and AGP bus standards. PCIe has numerous improvements over the older standards, including higher maximum system bus throughput, lower I/O pin count and smaller physical footprint, better performance scaling for bus devices, a more detailed error detection and reporting mechanism (Advanced Error Reporting, AER[1]), and native hot-plug functionality. More recent revisions of the PCIe standard provide hardware support for I/O virtualization.


PCI EXPRESS X 16

PCI Express x16 (graphics): PCI Express x16 slots are used mostly for graphics cards, though they can be used with any PCI Express card. Confusion may arise, however, because not all PCIe x16 slots are true PCIe x16. Occasionaly, you'll see PCIe x16 connectors that are physical slots for accommodating graphics cards, but are actually eight-lane (x8) or even four-lane (x4) electrically.

On some boards, even slots that support true 16-lane PCI Express for graphics may revert to eight lanes if you install a second graphics card into a second PCIe x16 slot on the motherboard. The P67 chipset, for instance, has only 16 total PCIe lanes for graphics. So if you drop in two graphics cards to run in dual GPU mode, each card will have just eight lanes available to it. This situation isn't as bad as it sounds, though, since even eight lanes in a PCIe 2.0- or 3.0-based system delivers plenty of bandwidth for most games


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