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Comment: Re:Spectrum? (Score 5, Informative) 128

by WhiteDragon (#43709007) Attached to: Samsung Testing 5G Phones With 1gbps Download Speed

I do not know what is the limit of the "wireless spectrum" if there is any. Before this limit is reached, I guess just updating all hardware gears that transmit/route more efficiently is all that is needed.

The limit is given precisely by Shannon's Law, which gives a mathematical limit on the amount of data that can be sent over a given amount of bandwidth. Spectral Efficiency is the amount of bandwidth available in a given wireless spectrum.

Comment: Re:I use it for linux distributions (Score 1) 302

by WhiteDragon (#43557219) Attached to: Ask Slashdot: Do You Move Legal Data With Torrents?

How would you use broadcast or multicast to distribute an OS? Call me ignorant, but how would you do that in practice?

I used to work in a computer lab at the university I went to. We used Ghost to do exactly that. All the computers in the lab (a few hundred PCs) were booted up off a special floppy (or later, cd) that started up Ghost in listen mode. Then, the central server used multicast to send the OS image to all the clients at once. It took less than an hour, and that was with 100Mb/s Ethernet.

Comment: Re:I use it for linux distributions (Score 1) 302

by WhiteDragon (#43557171) Attached to: Ask Slashdot: Do You Move Legal Data With Torrents?

Here's a question:
To know which bits have changed, doesn't it need to compare the two files. How does this result in bandwidth savings?

No, because it only sends a hash of the data. The other side computes a hash of it's data, and if the hashes match, the transfer is complete. If The hashes don't match, there is a rolling hash that can verify a partial match, and send only the changed data. There's more info here

Comment: Re:Can laser printing create nano-size circuits ? (Score 1) 83

by WhiteDragon (#43431215) Attached to: Tiny Chiplets: a New Level of Micro Manufacturing

"For example, the latest Intel's microchip, the Ivy Bridge (and soon the Haswell) have circuit-sizes as small as 22nm"

I'll bet on the traces being even smaller than that. You must mean transistor size.

It means feature size. A feature can be part of a transistor, or a circuit trace, or a bunch of other things.

Comment: Re:MSIE (Score 1) 736

by WhiteDragon (#42972453) Attached to: Ask Slashdot: Why Is It So Hard To Make An Accurate Progress Bar?

My favorite terrible progress bar was Internet Explorer, back in its early days of essentially being a renamed version of NCSA Mosaic. When attempting to load a site that wasn't available, the progress bar would slowly creep towards complete, despite the server being completely unresponsive. Then after a long while the browser would give up and stop the progress bar. Why on earth would the progress bar move if the server is completely unresponsive? Who programmed this? I would hope that they, like the inventor of Clippy, suffered a terrible death by fire.

Early versions of Netscape had an issue where if a download was getting slow, the speed would creep down and down, until it hit a divide by zero error and crashed the browser.

Comment: Samsung CLP-510 (Score 1) 266

by WhiteDragon (#42800167) Attached to: For personal printing, not work, I usually use ...

It was less than $200 for a color laser printer with duplexing. I paid an extra $40 or so for a network card for it. I've had it for about 3 years and never even changed the toner cartridges yet. The only drawbacks, it's really heavy and loud, and takes a while to warm up, but for as little as I print, it's great.

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