Ctrl+Alt+Del或Ctrl+Alt+Delete是键盘上 3 个键的流行组合。它用于在Windows中执行各种功能，例如打开任务管理器或关闭已崩溃的应用程序。这个组合键也被称为三指敬礼。它最初是由一位名叫David Bradley的(David Bradley)IBM工程师在 1980 年代初推出的。它最初用于重新启动与IBM PC 兼容的系统。
What is Ctrl+Alt+Delete?
此组合键的特殊之处在于它执行的功能取决于使用它的上下文。今天，它主要用于在Windows设备上执行管理功能。首先同时按下Ctrl和Alt键，然后按下Delete键。
此组合键的一些重要用途(Some important uses of this key combination)
Ctrl+Alt+Del 可用于重新启动计算机。开机自检(Power-on Self-Test)时使用，会重启系统。
相同的组合在Windows 3.x(Windows 3.x)和Windows 9x中执行不同的功能。如果您按此两次，则重新启动过程将开始，而不会关闭打开的程序。这也会刷新页面缓存并安全地卸载卷。但是在系统开始重新启动之前，您无法保存任何工作。此外，无法正确关闭正在运行的进程。
提示：如果您不想丢失重要文件，则使用Ctrl+Alt+Del重新启动计算机不是一个好习惯。如果您在未保存或正确关闭它们的情况下重新启动，某些文件可能会损坏。
在Windows XP、Vista和 7 中，该组合可用于登录用户帐户。通常，默认情况下禁用此功能。如果您想使用此快捷方式，有一组步骤可以启用该功能。
已登录Windows 10/Vista/7/8系统的用户可以使用Ctrl+Alt+Del打开该Windows安全性。这为您提供了以下选项——锁定系统、切换用户、注销、关闭/重新启动或打开任务管理器(Task Manager)（您可以在其中查看活动进程/应用程序）。
An in-detail view of Ctrl+Alt+Del
Ubuntu和Debian是基于Linux的系统，您可以使用Ctrl+Alt+Del退出系统。在Ubuntu中，使用快捷方式可以在不登录的情况下重新启动系统。
在VMware Workstation和其他远程/虚拟桌面应用程序等一些应用程序中，一个用户使用菜单选项将Ctrl+Alt+Del像往常一样输入组合不会将其传递给另一个应用程序。
如前所述，当您使用Ctrl+Alt+DelWindows安全屏幕中看到一组选项。可以自定义选项列表。可以从列表中隐藏一个选项，注册表(Registry)编辑器用于修改屏幕上显示的选项。
在某些情况下，仅按Alt按钮将执行与Ctrl+Alt+Del相同的功能。这仅在软件不使用Alt作为其他功能的快捷方式时才有效。
The story behind Ctrl+Alt+Del
David Bradley是IBM程序员团队的一员，他们致力于开发新的个人计算机（Acorn 项目(project Acorn)）。为了跟上竞争对手Apple和RadioShack的步伐，该团队只获得了一年的时间来完成该项目。
程序员面临的一个常见问题是，当他们遇到编码故障时，他们不得不手动重新启动整个系统。这种情况经常发生，他们正在浪费宝贵的时间。为了克服这个问题，David Bradley想出了Ctrl+Alt+Del作为重新启动系统的快捷方式。这现在可以用于在不进行内存测试的情况下重置系统，从而节省大量时间。他可能根本不知道这种简单的组合键在未来会变得多么流行。
David Bradley – the man Behind Ctrl+Alt+Del
1975 年，David Bradley开始在(David Bradley)IBM担任程序员。那是计算机刚刚普及的时期，许多公司都在努力使计算机更易于使用。Bradley是Datamaster(Datamaster – one)团队的一员，这是IBM在 PC 上的失败尝试之一。
1980 年晚些时候，布拉德利是(Bradley)橡子计划(Project Acorn)最后一位被选中的成员。该团队有 12 名成员正在从头开始构建 PC。他们获得了短短一年的时间来构建 PC。团队安静地工作，几乎没有或没有外部干扰。
几乎在团队成立五个月时，布拉德利(Bradley)创造了这个流行的捷径。他曾经从事绕线板的故障排除、编写输入输出程序以及一系列其他工作。Bradley选择这些特定键是因为它们在键盘上的位置。任何人都不太可能同时意外按下这么远的键。
然而，当他想出快捷方式时，它只适用于他的程序员团队，而不是最终用户。
捷径满足最终用户(The shortcut meets the end-user)
技术精湛的团队按时完成了项目。IBM PC 一经推出市场，营销专家就对其销量做出了很高的估计。然而，IBM认为这些数字过于乐观。(IBM)他们几乎不知道这些个人电脑会变得多么受欢迎。随着人们开始使用个人电脑进行各种活动，例如编辑文档和玩游戏，这在大众中很受欢迎。
此时，很少有人知道机器上的快捷方式。仅当Windows 操作系统(Windows OS)在 1990 年代变得普遍时，它才开始流行。当 PC 崩溃时，人们开始共享快捷方式作为快速修复。因此，捷径及其用法通过口耳相传而传播开来。当人们被程序/应用程序卡住或系统崩溃时，这成为人们的救命稻草。就在那时，记者们创造了“三指敬礼”一词来表示这种流行的捷径。
2001 年是IBM PC(IBM PC)诞生20周年。届时，IBM已售出约 5 亿台 PC。许多人聚集在圣何塞科技(San Jose Tech Museum)创新(Innovation)博物馆，以纪念这一事件。与知名行业专家进行了小组讨论。小组讨论中的第一个问题是向David Bradley询问他的小而重要的发明，该发明已成为全球Windows 用户(Windows user)体验的重要组成部分。
另请阅读：(Also Read:) 在远程桌面会话中发送 Ctrl+Alt+Delete
微软和按键控制组合(Microsoft and the key-control combination)
Microsoft将此快捷方式作为一项安全功能引入。它旨在阻止恶意软件试图访问用户信息。然而，比尔盖茨(Bill Gates)说这是一个错误。他的偏好是有一个可用于登录的按钮。
当时，当微软与(Microsoft)IBM接洽以提供一个可以执行快捷方式功能的Windows键时，他们的请求被拒绝了。随着其他厂商的蓬勃发展，Windows键终于被纳入其中。但是，它仅用于打开开始菜单。
最终，Windows包含了用于安全登录的双重登录序列。他们可以使用新的Windows键和电源按钮或旧的Ctrl+Alt+Del组合。现代Windows平板电脑默认禁用安全登录功能。如果你想使用它，它必须由管理员启用。
MacOS 呢？(What about MacOS?)
在macOS(macOS)中不使用此组合键。取而代之的是，Command+Option+Esc可用于打开Force Quit Menu。在MacOS上按Control+Option+Delete会闪烁一条消息——“这不是 DOS。” 在Xfce中，Ctrl+Alt+Del将锁定屏幕并出现屏幕保护程序。
通常，这种组合的常见用途仍然是摆脱无响应的应用程序或崩溃的进程。
概括(Summary)
- Ctrl+Alt+Del是键盘快捷键。
- 它也被称为三指敬礼。
- 它用于执行管理操作。
- Windows用户广泛使用它来打开任务(Task)管理器、注销、切换用户、关闭或重新启动系统。
- 使用快捷方式定期重启系统是一种不好的做法。某些(Certain)重要文件可能会损坏。打开的文件未正确关闭。数据也没有保存。
- 这在 macOS 中不起作用。Mac设备有不同的组合。
- IBM程序员David Bradley发明了这种组合。它是供他的团队私人使用的，以便在重新启动他们正在开发的 PC 时节省时间。
- 然而，当 Windows 起飞时，关于可以快速修复系统崩溃的快捷方式的消息传开了。因此，它成为最终用户中最受欢迎的组合。
- 当所有其他方法都失败时，Ctrl+Alt+Del就是方法！
What is Ctrl+Alt+Delete? (Definition & History)
Ctrl+Αlt+Del or Ctrl+Alt+Delete is a popular combіnation of 3 keys on the keyboard. It іs uѕed to perform various functionѕ in Windows such as openіng the task manager or shutting down an application that haѕ crashed. This key combinatіоn is also known as the three-finger salute. It was first introduced by an IBM engіneer named David Bradley in the early 1980s. It was initially usеd to reѕtart an IBM PC-compatible system.
What is Ctrl+Alt+Delete?
The specialty of this key combination is the function it performs depends on the context in which it is used. Today it is primarily used to perform administrative functions on a Windows device. The Ctrl and Alt keys are first pressed simultaneously, followed by the Delete key.
Some important uses of this key combination
Ctrl+Alt+Del can be used to restart the computer. When used while on Power-on Self-Test, it will reboot the system.
The same combination performs a different function in Windows 3.x and Windows 9x. If you press this twice, the rebooting process starts without shutting down open programs. This also flushes the page cache and safely unmounts volumes. But you cannot save any work before the system starts rebooting. Also, processes that are running cannot be closed properly.
Tip: It is not a good practice to use Ctrl+Alt+Del to restart your computer if you do not want to lose important files. Some files may get corrupted if you start restart without saving them or closing them properly.
In Windows XP, Vista, and 7, the combination can be used to login to a user account. Generally, this feature is disabled by default. If you want to use this shortcut, there is a set of steps to enable the feature.
Those who have logged in to a system with Windows 10/Vista/7/8 can use Ctrl+Alt+Del to open that Windows security. This provides you with the following options – lock the system, switch user, log off, shut down/reboot or open the Task Manager (where you can view the active processes/applications).
An in-detail view of Ctrl+Alt+Del
Ubuntu and Debian are Linux based systems where you can use Ctrl+Alt+Del to log out of your system. In Ubuntu, using the shortcut you can reboot the system without logging in.
In some applications such as VMware Workstation and other remote/virtual desktop applications, one user to send a shortcut of Ctrl+Alt+Del to another system using a menu option. Entering the combination like you usually do will not pass it to another application.
As mentioned before, you are presented with a set of options in the Windows security screen when you use Ctrl+Alt+Del. The list of options can be customized. An option can be hidden from the list, Registry editor is used for modifying the options displayed on the screen.
In some cases, pressing just the Alt button will perform the same function that Ctrl+Alt+Del does. This works only if the software does not use Alt as a shortcut for a different function.
The story behind Ctrl+Alt+Del
David Bradley was a part of the team of programmers in IBM who were working on developing a new personal computer (project Acorn). To keep up with competitors Apple and RadioShack, the team was given just a year to complete the project.
A common problem faced by the programmers was, when they faced a glitch in coding, they had to manually restart the entire system. This would happen often, and they were losing valuable time. To overcome this issue, David Bradley came up with the Ctrl+Alt+Del as a shortcut for rebooting the system. This could now be used to reset the system without the memory tests, saving them a lot of time. He probably had no idea how popular the simple key combination would become in the future.
David Bradley – the man Behind Ctrl+Alt+Del
In 1975, David Bradley started working as a programmer for IBM. It was a time when computers had just gained popularity and many companies were trying to make computers more accessible. Bradley was a part of the team that worked on Datamaster – one of IBM’s failed attempts at a PC.
Later in 1980, Bradley was the last member chosen for Project Acorn. The team had 12 members who were working on building a PC from scratch. They were given a short duration of one year to build the PC. The team worked quietly with little or no external interference.
Almost when the team was five months in, Bradley created this popular shortcut. He used to work on troubleshooting wire-wrap boards, writing input-output programs, and a range of other things. Bradley chooses these particular keys due to their placement on the keyboard. It was highly unlikely that anyone would simultaneously press such far apart keys accidentally.
However, when he came up with the shortcut, it was intended only for his team of programmers, not for the end-user.
The shortcut meets the end-user
The highly skilled team completed the project on time. Once the IBM PC was introduced in the market, marketing experts made high estimates of its sales. IBM, however, dismissed the numbers as an overoptimistic estimate. Little did they know how popular these PCs would become. It was a hit among the masses as people started using PCs for various activities such as editing documents and playing games.
At this time, few people were aware of the shortcut on the machine. It gained popularity only when Windows OS became common during the 1990s. When PCs crashed, people started sharing the shortcut as a quick fix. Thus, the shortcut and its usage spread by word of mouth. This became a saving grace for people when they got stuck with a program/application or when their systems crashed. It was then that the journalists coined the term ‘the three-finger salute’ to denote this popular shortcut.
2001 marked the 20th anniversary of IBM PC. By then, IBM has sold about 500 million PCs. A large number of people gathered at the San Jose Tech Museum of Innovation to commemorate the event. There was a panel discussion with renowned industry experts. The first question in the panel discussion was to David Bradley about his small but significant invention that has become a part and parcel of Windows user experience all over the world.
Also Read: Send Ctrl+Alt+Delete in a Remote Desktop Session
Microsoft and the key-control combination
Microsoft introduced this shortcut as a security feature. It was intended to block malware trying to gain access to user info. However, Bill Gates says that it was a mistake. His preference was to have one button that could be used for logging in.
At that time, when Microsoft approached IBM to include a single Windows key that would perform the function of the shortcut, their request was refused. With the bloom of other manufacturers, the Windows key was finally included. It is, however, used only to open the start menu.
Eventually, Windows included a dual login sequence for secure login. They could use the new Windows key and power button or the old Ctrl+Alt+Del combination. Modern Windows tablets have the secure login feature disabled by default. If you want to use it, it has to be enabled by the administrator.
What about MacOS?
This key combination is not used in macOS. Instead of this, Command+Option+Esc can be used to open the Force Quit Menu. Pressing the Control+Option+Delete on MacOS will flash a message – ‘This is not DOS.’ In Xfce, Ctrl+Alt+Del will lock the screen and the screensaver will appear.
Generally, the common use of this combination remains to get out of an unresponsive application or a process that is crashing.
Summary
- Ctrl+Alt+Del is a keyboard shortcut.
- It is also known as the three-finger salute.
- It is used to perform administrative operations.
- It is widely used by Windows users to open the Task manager, log off, switch user, shut down or reboot the system.
- Using the shortcut to regularly restart the system is a bad practice. Certain important files may get corrupted. Open files are not closed properly. Neither is the data saved.
- This does not work in macOS. There is a different combination for Mac devices.
- An IBM programmer, David Bradley invented this combination. It was meant for private use by his team to save time while rebooting the PC they were developing.
- However, when Windows took off, word spread about the shortcut that could quickly fix system crashes. Thus, it became the most popular combination among end-users.
- When all else has failed, Ctrl+Alt+Del is the way!
