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The ins and outs of USB (IBM developerWorks)The ins and outs of USB (IBM developerWorks)Posted Apr 28, 2005 23:01 UTC (Thu) by drathos (guest, #6454)In reply to: The ins and outs of USB (IBM developerWorks) by njhurst Parent article: The ins and outs of USB (IBM developerWorks)
I'm guessing (read: hoping) that he's referring to it 'winning' over the technologies it replaced (and even then, I'm not sure if it were merit or brute force that got it where it is). PS2, serial, and parallel connections have all been replaced by USB to a certain extent.
Yes, you still see those connections on motherboards, but it's getting harder and harder to find uses for them. You'll be hard pressed to find parallel printers for sale anymore. Most mice are USB with PS2 adapters now. Just about everything that used serial before uses USB now. Keyboards are the only thing that seems to be sticking with the old connectors.
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The ins and outs of USB (IBM developerWorks) Posted Apr 29, 2005 6:39 UTC (Fri) by beejaybee (guest, #1581) [Link] Yeah, designed-in obsolescence. There is _nothing_ wrong with PS/2 connectors for keyboard & mouse, indeed there seems to be no benefit in USB for these devices. RS-232 serial mice and AT keyboards are fine, too. I don't see any performance benefit in USB over parallel ports for printers, either. Meanwhile parallel port connectors are solid and reliable, USB connectors aren't.
It will really upset me when PS/2 connectors get dropped from mobos. You see, I'm using a 20-year-old IBM keyboard with a nice positive action, decently weighted and with a nice "click". It has a PS/2 connector. I find it next to impossible to use membrane keyboards due to their "dead flesh" feel; the only halfway acceptable modern replacement is a mechanical contact keyboard from Cherry (at 20x the price of a "standard" kb), but it doesn't have the same weighted feel or the same audible feedback.
As for USB storage - well, it does seem to work to some degree, but it's infuriating in some ways (devices that work in some ports but not others). I definitely agree with others who claim that Firewire is superior from the practical point of view, never mind the technology.
This is essentially the same as the digital/film photography argument. The market is removing choice on the principle that sales volume rules, therefore we all get "cheap and cheerful" devices that are infuriating to use, unmaintainable and will need replacement in months rather than decades.
The ins and outs of USB (IBM developerWorks) Posted Apr 29, 2005 6:56 UTC (Fri) by donwaugaman (subscriber, #4214) [Link] They have PS/2 mouse + keyboard -> USB adapters for about $10. Obsolescence delayed. :-)
The ins and outs of USB (IBM developerWorks) Posted Apr 29, 2005 6:58 UTC (Fri) by alspnost (subscriber, #2763) [Link] Yup, don't get me started on keyboards. I have a USB keyboard, which is great, but when you buy a new motherboard, USB keyboard support always seems to be *disabled in the BIOS* by default. So what do you do? Go and steal your neighbour's old PS2 keyboard, use it to get in to the BIOS to change one parameter, then plug in your USB keyboard again. Ridiculous - why do they do this??
IBM keyboard Posted Apr 29, 2005 8:35 UTC (Fri) by grmd (subscriber, #4391) [Link] the only halfway acceptable modern replacement is a mechanical contact keyboard from CherryDo you know about Unicomp? They sell what is essentially the IBM clicky keyboard from their pckeyboard website. I have bought both the clicky and spongy types and been happy with them. The clicky type feels nicer but the noise can be annoying to co-workers, so sometimes I use the spongy one instead, and even that feels better than the cheap modern keyboards that most people seem to use.
The ins and outs of USB (IBM developerWorks)
The ins and outs of USB (IBM developerWorks) Posted Apr 29, 2005 13:35 UTC (Fri) by smitty_one_each (subscriber, #28989) [Link] Plus, it's cheaper to group all of the I/O USB stuff on one USB hub.
The ins and outs of USB (IBM developerWorks) Posted Apr 30, 2005 18:39 UTC (Sat) by bk (guest, #25617) [Link] PS/2 is just as hotplug as USB for keyboards and mice, at least on Linux. Try it. Unplug your PS/2 keyboard while the system is running and then plug it back in. Everything works.
The ins and outs of USB (IBM developerWorks) Posted Apr 30, 2005 20:54 UTC (Sat) by farnz (guest, #17727) [Link] PS/2 hotplug blows a fuse on my motherboard. YMMV, but it's risky.
The ins and outs of USB (IBM developerWorks) Posted May 1, 2005 2:43 UTC (Sun) by dlang (✭ supporter ✭, #313) [Link] it varies motheboard to motherboard, but I can definantly attest that hotplugging PS/2 keyboards can pop fuses on the motherboard (it depends which pins connect first, just the right combination will cause problems)
back when I worked PC repair I repaired dozens of machines with this exact problem (interestingly the manufacturers expected service was motherboard replacement)
The ins and outs of USB (IBM developerWorks) Posted May 1, 2005 15:09 UTC (Sun) by bk (guest, #25617) [Link] Weird. It's worked fine on all my machines, I didn't even know it could cause problems. Nice to know, I guess.
The ins and outs of USB (IBM developerWorks) Posted Apr 29, 2005 14:17 UTC (Fri) by hensema (guest, #980) [Link] USB Mice use higher bitrates than PS/2 mice. You can actually notice the difference. Also, the PS/2 mouse port uses an interrupt, and interrupt lines are still a bit scarce.
The ins and outs of USB (IBM developerWorks) Posted Apr 29, 2005 16:14 UTC (Fri) by josh_stern (guest, #4868) [Link] I feel the same way about keyboard style. As someone else mentioned, you can buy an adapter. Also, I've found the Macally USB keyboard to have a relatively good spacing and feel.
The ins and outs of USB (IBM developerWorks) Posted Apr 29, 2005 17:30 UTC (Fri) by iabervon (subscriber, #722) [Link] There is _nothing_ wrong with PS/2 connectors for keyboard & mouse, indeed there seems to be no benefit in USB for these devices. Unless you have configurable input devices, such as the Twiddler or Kinesis. With USB, the computer can configure them (load your saved settings, etc); with PS/2, you have to type your configuration into the device.
The ins and outs of USB (IBM developerWorks) Posted Apr 29, 2005 23:49 UTC (Fri) by wildpossum (guest, #17744) [Link] >I don't see any performance benefit in USB over parallel ports for printers, >either. Meanwhile parallel port connectors are solid and reliable, USB >connectors aren't.
You haven't tried to send a multi-megabyte PostScript file to a printer over a parallel port then. I'd prefer an Ethernet internet on my printer but I'll settle for USB 2.0.
The ins and outs of USB (IBM developerWorks) Posted May 2, 2005 6:14 UTC (Mon) by ekj (subscriber, #1524) [Link] Yeah, designed-in obsolescence. There is _nothing_ wrong with PS/2 connectors for keyboard & mouse, indeed there seems to be no benefit in USB for these devices.I consider it a "wrong" that the fuse on my motherboard blows if I hotplug my keyboard. I consider it a "wrong" that the communication is one-way, so that I cannot program my mouse over ps/2. I consider it a "wrong" (or atleast a minus) to require multiple different cables instead of just a single one to the computer under the desk and a hub at the desk. For that matter, I consider it a "wrong" to have different connections for situations where there's no reason you couldn't use one and the same. It decreases flexibility for no reason. It assumes too much. (Everyone will have precisely *one* parallell device for example. Yes, there's pass-troughs but it's a hack. Parallell is ridicolously thick and large and at the same time slow as molasses. On Half the motherboards, the small screws like to fall off if you look at them funny.
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