0
Early computers were entirely point to point wired either with soldered or wire wrapped connections. They usually used circuit modules that plugged into connectors mounted on the mainframe rack to make repair faster (when a problem was located the defective module could be quickly unplugged and a good module plugged in it's place to get the computer running again while the defective module was being repaired on the test bench).
In the 1950s printed circuit boards replaced the point to point wired circuit modules, but the connectors they plugged into were still point to point wired together with soldered or wire wrapped connections.
Starting with some of the minicomputers in the 1960s large multilayer printed circuit boards with the connectors for the individual circuit boards mounted on this large board. These large multilayer printed circuit boards were called "backplanes" and the connectors mounted on them "backplane connectors". These minicomputers might have several backplanes usually mounted in different sections of the rack containing the minicomputer (the rack was often larger than the size that was practical to make the backplane circuit boards).
The first microcomputers in the 1970s copied minicomputers and used a single backplane (their chassis were small enough that usually one backplane was all that was needed). Beginning with the IBM PC in the 1980s "motherboards" replaced "backplanes", the motherboard contains much of the circuitry of the computer itself and connectors for the "daughterboards" while a backplane only contained connectors.
No modern computers use backplanes or backplane connectors today, they are obsolete.
Wiki User
∙ 8y ago
Add your answer:
Earn +20 pts
Do backplane systems use a true motherboard?
False. Backplane systems do not use a true motherboard.
What is a backplane?
A backplane is similar in concept to a motherboard, except it contains no significant electronics (i.e. all of the electronics components are on boards that plug into connectors on the backplane), a motherboard usually contains significant amounts of electronics components and may or may not have several connectors connected similar to those on a backplane for optional boards that could add functionality to the machine desired by the user. Some backplanes are not wired with all the connectors in parallel, but instead are wired "randomly" because every board plugged into the backplane has a specific purpose in the machine. These backplanes may not use any form of computer bus (e.g. address bus, data bus, control bus) or such buses may only be used to interconnect different backplanes within the machine or peripherals connected to the machine. Backplanes have been constructed using hand soldering of the connector pins, wire wrapping of the connector pins (either by hand or automated machine), printed circuit board (either flexible or rigid), etc.
Do Backplane systems not use a true motherboard?
No
What is the main purpose of Backplane protocol?
The Backplane Protocol is a frame work that seamlessly manages message and event notifications between third-party JavaScript components in a webpage.
What type of Device would use an 80-pin connector?
SCSI Harddrive:80-pin Connector The SCA interface was designed to provide a standard connection for systems using hot swappable drives. SCA interface drives connect to a SCSI backplane that provides power, configuration settings such as SCSI ID, and termination of the SCSI bus.
What is backplane capacity?
Total bandwidth of back to back connectivity between 2 switches.
What was the main complaint about the Altair 8800 personal computer?
Noise on the unterminated backplane signals.
A board that normally sits against the back of a proprietary case with slots on it for other cards?
The backplane
What is picmg?
n today's changing world that requires more as well as on demand applications that require instantaneous responses, parallel bus technology cannot keep up with its inherent bandwidth limitations. PICMG 1.0 SBC's and backplanes have long been the industry standard due to it's ability to support many different PCI and ISA expansion cards. However as users try to add more PCI cards to their system, the PCI bus becomes overloaded and then performance is degraded, as this bottleneck slowly chokes the systems potential. With increased focus on the user experience, more powerful graphics cards are required to display robust graphic intense applications and PCI graphics cards are not able to keep up. The PICMG 1.3 specification solves all the bandwidth problems of the past, while still support some legacy buses. With the introduction of PICMG 1.3 the first major change is the SBC and backplane interface, the parallel bus interfaces are replace with high-speed serial inks. However PICMG 1.3 is still backwards compatible with PCI and PCI-X expansion cards as well as PCI Express cards.. In addition, the new standard offers advanced features such as IPMI, Serial ATA, USB, and Ethernet connections directly on the backplane. The PICMG 1.3 specification replaces the PICMG 1.0 ISA / PCI bus combination with PCI Express and / or PCI / PCI-X interfaces to the backplane. PICMG 1.3 Buses PICMG 1.3 single board computers can support multiple PCI Express lanes on a backplane, including x1, x4, x8, or x16. The A and B connectors on the SBC are responsible for PCIe power and data to and form the SBC and backplane. PICMG 1.3 Edge Connector Electrical Functions PICMG 1.3 Edge Connector Electrical Functions On a PICMG 1.3 system PCI and PCI-X cards can take advantage of the high-speed serial links, streamlined interconnects, and robust protocol that PCI Express offers in the PICMG 1.3 specification via PCI Express-to-PCI / PCI-X bridge chips on the backplane. The specification also accommodates an optional 32-bit PCI / PCI-X connection for supporting passive (no bridge chip) backplanes. The PCI / PCI-X clock rate between the SHB’s optional connector D and the backplane can be 33 MHz, 66 MHz, 100 MHz, or 133 MHz, depending on the backplane’s and the SHB’s design. Connector C contains extra edge connector contacts for additional power. The specification also features optional SHB to backplane interfaces for: * SATA * USB * IPMB * SMBUS * Geographic addressing * Power management Real World Benefits of PICMG 1.3 The end result of PICMG 1.3 is Increased bandwidth and more advanced integrated features. The increased bandwidth will allow your system to grow and perform at peak performance without choking. You can fully populate your backplane with high speed, PCIe, PCI, and PCI-X cards without worrying about bottlenecks in the busses. Integrated features onto the backplane allow for easier maintenance when switch out SBC's. Essentially all the SBC becomes is a processor board, since all IO and connections are able to go through the backplane. When installing a new SBC, the hardware abstraction layer in the OS doesn't need to worry about new hard drive controllers, since they are all on the backplane, thus avoiding the blue screen of death. Lastly the need for more advanced graphics capability is solved, the PICMG 1.3 standard supports x16 PCI Express buses, which is the same bus that the video card industry for their video cards. Now virtually any high end PCI Express video card can be installed on a backplane, with up to 18 other slots of various PCI and PCIe cards next to it. Orbit Micro's New PICMG 1.3 Products We have deployed numerous new SBC and backplane products featuring the PICMG 1.3 standard. In addition we have developed a whole new line of systems featuring this technology as well.
Which component provides the hot-plug interface to SCSI hard drive in most Dell Servers?
Backplane
What hardware models will allow you to scale the network from a port density perspective on one backplane?
ws- 4500
Backplanes contain no circuits other than bus connectors and some buffer and driver circuits?
Passive backplane
