ĭuring a question and answer presentation on 21 September 2013, Gates said "it was a mistake", referring to the decision to use Ctrl+Alt+Del as the keyboard combination to log into Windows. I may have invented it, but I think Bill made it famous." he quickly added it was a reference to Windows NT logon procedures ("Press Ctrl + Alt + Delete to log on"). īradley is also known for his good-natured jab at Gates at the celebration of the 20th anniversary of the IBM PC on Augat The Tech Museum: īradley viewed this work as just one small task out of many: "It was five minutes, 10 minutes of activity, and then I moved on to the next of the 100 things that needed to get done." In a March 2018 email, one of Bradley's co-workers confirmed the command was invented in 1981 in Boca Raton, Florida. The feature, however, was detailed in IBM's technical reference documentation to the original PC and thereby revealed to the general public. Bill Gates (former Microsoft CEO) remembered it as "just something we were using in development and it wouldn't be available elsewhere". The feature was originally conceived only as a development feature for internal use and not intended to be used by end users, as it triggered the reboot without warning or further confirmation-it was meant to be used by people writing programs or documentation so that they could reboot their computers without powering them down. ![]() According to his own account, Mel Hallerman, who was the chief programmer of the project, therefore suggested switching the key combination to Ctrl+ Alt+ Del as a safety measure, a combination impossible to press with just one hand on the original IBM PC keyboard. Bradley, as the chief engineer of the IBM PC project and developer of the machine's ROM-BIOS, had originally usedĬtrl+ Alt+ Esc, but found it was too easy to bump the left side of the keyboard and reboot the computer accidentally. The soft reboot function via keyboard was originally designed by David Bradley. In those days, everyone using a computer knew that particular three-key combination.Original IBM PC 5150 keyboard: It is impossible to press Ctrl+Alt+Del with one hand only Back in the 70s one clever company decided on naming itself ‘CTRL-ALT-DELETE.’ I forget what product they were selling, but their choice of a name was a clever one. This can sometimes alert you to the presence of a trojan, when you discover your CPU is running at 100% when you are currently not even running one of your own applications on the PC. There’s also a performance page, where Windows will give you a graphic look at how memory is being used on your computer. ![]() Secondly, If you have trojans on your hard disk, this page is where you can spot them, and even turn them off by selecting them and then choosing the ‘End Process’ button. First, it’s astonishing how many programs are running at once in order to keep your PC alive. The second tab page lists every single bit of software running in memory on your computer. ![]() On this page you can turn off (end) any application by selecting it and then clicking on the ‘End Task’ button. The first lists all the currently running applications. The Task Manager has five different tabs, and each page contains totally different information. The key combo brings up the Windows Task Manager, and from that point, you can open the ‘Shut Down’ menu on the top line and shut down the computer, restart the computer, etc. CTRL – ALT – DELETE is the combination which used to mean ‘Get me out of here, stop the music, I want off!’ Today the effects of pressing these three keys in order are still there, but with a slight difference. Another vestige from IT’s past is a strange three-key combo which goes way, way back.
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