Question

differientiate between single bus architecture and multiprocessing system

Answer 1

$<font color="red"><h1>HELLO FRIEND</h1></font> <b><font color="green"><marquee>Here is your answer.</marquee></font></b><hr size=3 color="blue"> No one uses busses any more. They are too slow. Essentially all wiring in modern computers is point to point. If you need to broadcast to multiple receives, then typically either a single set of wires loops through all of the stations, with repeaters at each hop, or there is a hub which fans out the wires with one copy for each station. Often, things that are called busses, like “PCIexpress bus” are not busses at all, they are point to point links made to act like a bus by somewhat smart switching stations. USB, or universal serial bus, is also not a bus, but a tree of point to point links connected by hubs and switches. Another good example is Ethernet. In the beginning, in the ’80s of last century, Ethernet was a bus, with stations tapped into a single coaxial cable that snaked around to all stations. This turned out to be a maintenance nightmare, and now everyone has switched to the sort of Ethernet that uses point to point Cat 5 cable connected by switches. Logically it is still a bus, and you can send broadcast packets, but they are repeated by the switches to reach all stations. And because Ethernet is not actually a bus, multiple packets can flow on different point to point links at the same time, which greatly increases performance. At the top, I mentioned that busses are too slow, why is that? It is because of the pokey molasses like creeping along of signals travelling at the speed of light. Even PCIexpress V2, which is a few years old now, does signalling at 2.5 gigabits per second. At those speeds, a “bit” on a wire is about 3 inches long. There just isn’t time for a bus setup to figure out whose turn it is to go next. <hr size=3 color="green"><font color=#800080> <b>HOPE IT HELPS<BR>PLEASE MARK IT AS A BRAINLIEST ANSWER<BR>PLEASE FOLLOW ME</b><BR><BR></font><font color="red"><b>About me: </b><I>Shivam shaurya$