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| Thread ID: 65548 | 2006-01-22 04:27:00 | How do you calculate line speed? | Ninjabear (2948) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 423118 | 2006-01-22 04:27:00 | How do you convert kbps to mbps? It says my line speed is approximately 105556.9 Kbps or 12935.9 K bytes/sec |
Ninjabear (2948) | ||
| 423119 | 2006-01-22 04:45:00 | a mb is approx 1000 kb.....thus a mb= 1,000,000 b/s and a kb= 1,000 b/s approx....... |
drcspy (146) | ||
| 423120 | 2006-01-22 05:43:00 | ? I think the intended question was the relationship of Mbits/s to kBytes/s? There is 8 bits to a Byte, connection speed is in bits, transfer speed is in Bytes. Then there is error correction overheads etc. A pure 8 bits to a Byte conversion would give 105,556.9 kbits/sec = 13,194.6 kBytes Not far away from the 12,935.9 stated, the difference will probably be error correction and handshaking. |
godfather (25) | ||
| 423121 | 2006-01-22 06:14:00 | a mb is approx 1000 kb.....thus a mb= 1,000,000 b/s and a kb= 1,000 b/s approx....... 8bits to a byte/1024bytes to a kilobyte/1024kilobytes to a megabyte etc. It is a 1024 because of binary. |
mikebartnz (21) | ||
| 423122 | 2006-01-23 01:31:00 | It's usually nonsense and pointless to insist on the difference when talking about communication channels. Apart from the fact that most people don't know the difference between binary and decimal, 1024 is 0.24% bigger than 1000. Wow. That's really significant. :D It's like the gardening columns in the newspapers for a year or so after we legally changed to metric measures. Where the columnist write "poke a hole about 3/4" deep with your thumb, put the seed in and press it in", the subeditors would get out the calculator and make the conversion. To "1.904999999 cm" To make it worse, they ignored the proper units and used "cm". :groan: |
Graham L (2) | ||
| 423123 | 2006-01-23 01:36:00 | practically you are right but for one small thing...........1024 isn't 0.24% bigger than 1000...... 24 is approximately 1/41th of 1000 therefore much closer to 2.4% than 0.24% :-) |
drcspy (146) | ||
| 423124 | 2006-01-23 01:51:00 | 24/1024 --> .0234375, according to my calculator. So that's 2.3%. Oops. In the real, noisy world, measurement to within 10% is good. Often, getting within an order of magnitude is just wonderful. So I'm wonderful. :cool: I knew that. :D | Graham L (2) | ||
| 423125 | 2006-01-23 21:03:00 | It's usually nonsense and pointless to insist on the difference when talking about communication channels. Apart from the fact that most people don't know the difference between binary and decimal, 1024 is 0.24% bigger than 1000. Wow. That's really significant. :D When it is just as easy to be precise as inprecise I don't see the point of being inprecise. 1000 bytes does not a kilobyte make. |
mikebartnz (21) | ||
| 423126 | 2006-01-24 00:43:00 | Mike, I'm starting to give up . I know the difference, and usually try to be exact . But when people think a "b" is both a" byte", and a "bit" what can you do? When they think a "m" means "mega" not "milli" . When they think a "K" is a number multiplier, not a temperature . When they . . . :groan: My point about it's being pointless in discussions of communications speed is that it is a "real time" thing . It depends on the real world conditions at the time . It can change from second to second . Internet speed depends on the load on the routers and on the lines in the path . The end point speeds have very little to do (except as an upper limit) with the measured rate . And, Mike, since "it's just as easy to be precise as imprecise," 1000 bytes is a kilobyte . 1024 bytes make a kibibyte (physics . nist . gov/cuu/Units/binary . html) . :thumbs: |
Graham L (2) | ||
| 423127 | 2006-01-24 06:39:00 | I guess that Ninjabear wants to know if he/she has a Ferrari or an Austin 7 :) :) :) | Zippity (58) | ||
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