Ctrl-Alt-Del Inventor To Retire From IBM 459
wherley writes "AP reports that IBM'er David Bradley, who came up with the (in)famous Ctrl-Alt-Delete key combination, is retiring. The article mentions: 'At a 20-year celebration for the IBM PC, Bradley was on a panel with Microsoft founder Bill Gates and other tech icons. The discussion turned to the keys. 'I may have invented it, but Bill made it famous,' Bradley said. Gates didn't laugh. The key combination also is used when software, such as Microsoft's Windows operating system, fails'." We featured a story on Bradley a few months back.
Re:Why only that combination? (Score:5, Informative)
Re:Why only that combination? (Score:3, Informative)
On the Mac, the sequence is Command-Option-Escape.
Re:Why only that combination? (Score:1, Informative)
"Bradley chose the control and alt keys because he needed two shift keys to make the operation work, and he chose the delete key because it was on the opposite side of the keyboard. He didn't want people to hit control-alt-delete by accident."
link [gannettonline.com] the article mentioned on slashdot earlier [slashdot.org]
Ctrl-Alt-Del Movie (Score:5, Informative)
CtrlAltDel.asf [cmu.edu]
Oh, the movie doesn't start 15 seconds for some reason. Wasn't me.
Re:I may have invented it, but Bill made it famous (Score:5, Informative)
'I may have invented it, but Bill made it famous,' Bradley said.
Note that Bradley claimed to be referring to the NT logon procedure. Full quote is from this video. [techtv.com]
I was under the impression.... (Score:1, Informative)
For some reason I thought Gates had a sense of humor.
Too bad he can't even laugh at himself.
Re:Salute! (Score:5, Informative)
You mentioned remapping the salute, but it was vague on which OS you meant, so I thought I'd just clarify.
You can change the program that is run when you press CTL-ALT-DEL on Linux by editing
to be pendantic... (Score:2, Informative)
"After the SAS [Security Attention Sequence] is triggered in Windows NT, all user-mode programs stop. No program can trap the SAS sequence; it is the sole property of the security subsystem. If a user presses Ctrl+Alt+Del, he can be assured that his information is secure."
Re:Salute! (Score:1, Informative)
Take a look at your keboard... (Score:2, Informative)
Re:if only it always worked (Score:4, Informative)
It's possible for this to have been disabled in the BIOS, however the only PCs I've ever seen with no support for this at all are some old low spec Compaqs.
Re:screw that - give me Mac OS X (Score:3, Informative)
That also reminds me, on OS 9, you could press command-power, and escape to a prompt. The only command I know of was 'go', which would take you to the Finder. Great on the older installs of At Ease
Does CMD-Power work on OS X? Here goes....
Re:Three keys (Score:3, Informative)
SysRq - Not sure on this one, never used it, - possibly from mainframe terminal keyboards.
Pause - Paused the exeuction of the running program (remember: this was before OS's capable of multitasking), still used occasionally in games.
Break - killed the current program, well at least it was supposed to. You had to add a CTRL to it when pressing. I believe it originally came from when mainframe terminals were popular.
More precisely... (Score:5, Informative)
This kind of keystroke is called SAK (Secure Attention Key), as it's not specific to Windows NT.
SAK is an keystroke (or other event, for example sending "break" on a Sun serial port) that the OS guarantees only the Operating System can ever handle.
Comment removed (Score:5, Informative)
Re:Why only that combination? (Score:4, Informative)
Re:XP's killed the glory... (Score:5, Informative)
It took Bradley five minutes to write the CTRL+ALT (Score:1, Informative)
Re:Salute! (Score:3, Informative)
To actually change the key sequences, change what gets mapped to 'Boot' in your kernel keymaps file. On Debian, this is /etc/console/boottime.kmap.gz; I'm not sure about others.
I still use the pause key (Score:5, Informative)
Re:I may have invented it, but Bill made it famous (Score:3, Informative)
Re:Three keys (Score:4, Informative)
For more details, study
Very useful. Far more convenient than pressing some chord that brings up a GUI screen with buttons to press. The framebuffer may be corrupted, for instance, or the mouse non-responsive, or the GUI server frozen, etc.
Re:NT used it for logging on. (Score:1, Informative)
Re:I may have invented it, but Bill made it famous (Score:2, Informative)
The full handler was: int 9, al = scan code -> calls kb translator: int 15, ah = 0x4f, al = scan code, on return al = modified scan code. The resulting scan code is looked up and dealt with as a special case or passed on up to higher level software.
Hooking this interrupt was a first dos asm program for lots of us in the old days - I haven't poked around at that level in a while so I don't know if NT had some sort of scheme to prevent those sorts of hijinks, and if so why any other key sequence would not have worked just as well.
Re:Three keys (Score:3, Informative)
Re:Three keys (Score:1, Informative)
PrtScr, in DOS days, sent the contents of the (text mode) screen to the printer. In Windows, it copies the contents of the display to clipboard (some games also map this to internal screenshot command, saving a screenshot to file). In Linux, um, it can be bound to whatever command you need in Hotkeys application or its ilk. I use it to save a screenshot to /tmp/sshot.png.
SysRQ was supposed to be a funky command switching / task management key in any of the cool future PC operating systems. Nobody bothered, except perhaps the Linux developers who envisioned "Magic SysRQ key", useful for tasks like rebooting the computer cleanly if X11 or something has once again messed up the console completely.
Scroll Lock is used to switch the cursor keys to "scroll mode" in modern apps. Or, to pause terminal output in Linux. Or something similar. Pause/Break is probably so obscure that even the inventors didn't yet know what the heck those were supposed to be used for - "future expansion" in case something needed to be paused or broken, more likely.
Re:Salute! (Score:2, Informative)
in
HP Calculators (Score:3, Informative)
Re:More precisely... (Score:1, Informative)
Not really (Score:3, Informative)
A lot of time, if the thing's completely locked, that's not responsive either, as that switch connects only to the MOBO. I prefer an actual *switch* that goes only to the power supply.
I've seen computers that could only be reset by unplugging the damned things. Newer ones, too.
Regarding "Bill did not laugh"... (Score:4, Informative)
He's not some evil guy--he's human like everyone and can take criticism in good fun from colleagues.
Re:XP's killed the glory... (Score:2, Informative)
Actually, in 16-bit Windows (Windows 3.1), pushing CTRL-ALT-DEL would bring up a bluescreen. If an application had frozen it would say something like "(Application name) is not responding...press ENTER to terminate the application, push ESC to return to Windows and wait, or push CTRL-ALT-DEL again to restart your computer." The task list was invoked with CTRL-ESC.
My favorite Bill Gates video moments (Score:4, Informative)
Bill getting slammed about the three-fingered salute [xohost.com]
Bill at the Windows 98 premiere watching the demo blue screen [xohost.com]
I'd almost feel sorry for the guy, but he's worth more than most countries and can do whatever the hell he wants.