<s>
Control-Alt-Delete	B-Device
(	O
often	O
abbreviated	O
to	O
Ctrl+Alt+Del	B-Device
and	O
sometimes	O
called	O
the	O
"	O
three-finger	B-Device
salute	I-Device
"	O
or	O
"	O
Security	O
Keys	O
"	O
)	O
is	O
a	O
computer	O
keyboard	O
command	O
on	O
IBM	B-Device
PC	I-Device
compatible	O
computers	O
,	O
invoked	O
by	O
pressing	O
the	O
Delete	B-Device
key	I-Device
while	O
holding	O
the	O
Control	B-Device
and	O
Alt	B-Device
keys	I-Device
:	O
.	O
</s>
<s>
For	O
instance	O
,	O
in	O
pre-boot	O
environment	O
(	O
before	O
an	O
operating	B-General_Concept
system	I-General_Concept
starts	O
)	O
or	O
in	O
MS-DOS	B-Application
,	O
Windows	B-Application
3.0	I-Application
and	O
earlier	O
versions	O
of	O
Windows	O
or	O
OS/2	B-Application
,	O
the	O
key	O
combination	O
reboots	B-Device
the	O
computer	O
.	O
</s>
<s>
Starting	O
with	O
Windows	B-Application
95	I-Application
,	O
the	O
key	O
combination	O
invokes	O
a	O
task	B-General_Concept
manager	I-General_Concept
or	O
security	O
related	O
component	O
that	O
facilitates	O
ending	O
a	O
Windows	O
session	O
or	O
killing	O
a	O
frozen	B-General_Concept
application	O
.	O
</s>
<s>
The	O
soft	B-Device
reboot	I-Device
function	O
via	O
keyboard	O
was	O
originally	O
designed	O
by	O
David	O
Bradley	O
.	O
</s>
<s>
,	O
but	O
found	O
it	O
was	O
too	O
easy	O
to	O
bump	O
the	O
left	O
side	O
of	O
the	O
keyboard	O
and	O
reboot	B-Device
the	O
computer	O
accidentally	O
.	O
</s>
<s>
According	O
to	O
his	O
own	O
account	O
,	O
Mel	O
Hallerman	O
,	O
who	O
was	O
the	O
chief	O
programmer	O
of	O
the	O
project	O
,	O
therefore	O
suggested	O
switching	O
the	O
key	O
combination	O
to	O
as	O
a	O
safety	O
measure	O
,	O
a	O
combination	O
impossible	O
to	O
press	O
with	O
just	O
one	O
hand	O
on	O
the	O
original	O
IBM	B-Device
PC	I-Device
keyboard	I-Device
.	O
</s>
<s>
The	O
feature	O
was	O
originally	O
conceived	O
only	O
as	O
a	O
development	O
feature	O
for	O
internal	O
use	O
and	O
not	O
intended	O
to	O
be	O
used	O
by	O
end	O
users	O
,	O
as	O
it	O
triggered	O
the	O
reboot	B-Device
without	O
warning	O
or	O
further	O
confirmationit	O
was	O
meant	O
to	O
be	O
used	O
by	O
people	O
writing	O
programs	O
or	O
documentation	O
so	O
that	O
they	O
could	O
reboot	B-Device
their	O
computers	O
without	O
powering	O
them	O
down	O
.	O
</s>
<s>
Bill	O
Gates	O
(	O
former	O
Microsoft	O
CEO	B-Application
)	O
remembered	O
it	O
as	O
"	O
just	O
something	O
we	O
were	O
using	O
in	O
development	O
and	O
it	O
would	O
n't	O
be	O
available	O
elsewhere	O
"	O
.	O
</s>
<s>
Bradley	O
is	O
also	O
known	O
for	O
his	O
good-natured	O
jab	O
at	B-Operating_System
Gates	O
at	B-Operating_System
the	O
celebration	O
of	O
the	O
20th	O
anniversary	O
of	O
the	O
IBM	B-Device
PC	I-Device
on	O
August	O
8	O
,	O
2001	O
at	B-Operating_System
The	O
Tech	O
Museum	O
:	O
</s>
<s>
"	O
;	O
he	O
quickly	O
added	O
it	O
was	O
a	O
reference	O
to	O
Windows	B-Device
NT	I-Device
logon	B-General_Concept
procedures	O
(	O
"	O
Press	O
Ctrl	B-Device
+	O
Alt	B-Device
+	O
Delete	O
to	O
log	O
on	O
"	O
)	O
.	O
</s>
<s>
During	O
a	O
question	O
and	O
answer	O
presentation	O
on	O
21	O
September	O
2013	O
,	O
Gates	O
said	O
"	O
it	O
was	O
a	O
mistake	O
"	O
,	O
referring	O
to	O
the	O
decision	O
to	O
use	O
Ctrl+Alt+Del	B-Device
as	O
the	O
keyboard	O
combination	O
to	O
log	O
into	O
Windows	O
.	O
</s>
<s>
By	O
default	O
,	O
when	O
the	O
operating	B-General_Concept
system	I-General_Concept
is	O
running	O
in	O
real	B-Application
mode	I-Application
(	O
or	O
in	O
a	O
pre-boot	O
environment	O
,	O
when	O
no	O
operating	B-General_Concept
system	I-General_Concept
is	O
started	O
yet	O
)	O
,	O
this	O
keystroke	O
combination	O
is	O
intercepted	O
by	O
the	O
BIOS	B-Operating_System
.	O
</s>
<s>
The	O
BIOS	B-Operating_System
reacts	O
by	O
performing	O
a	O
soft	B-Device
reboot	I-Device
(	O
also	O
known	O
as	O
a	O
warm	O
reboot	B-Device
)	O
.	O
</s>
<s>
Examples	O
of	O
such	O
operating	B-General_Concept
systems	I-General_Concept
include	O
DOS	B-Device
,	O
Windows	B-Application
3.0	I-Application
in	O
Standard	O
Mode	O
as	O
well	O
as	O
earlier	O
versions	O
of	O
Windows	O
.	O
</s>
<s>
In	O
Windows	O
9x	O
and	O
Windows	B-Application
3.0	I-Application
running	O
in	O
386	O
Enhanced	O
mode	O
,	O
the	O
keystroke	O
combination	O
is	O
recognized	O
by	O
the	O
Windows	O
keyboard	O
device	B-Application
driver	I-Application
.	O
</s>
<s>
According	O
to	O
the	O
value	O
of	O
the	O
option	O
in	O
the	O
section	O
of	O
system.ini	B-Protocol
,	O
Windows	O
performs	O
one	O
of	O
several	O
actions	O
in	O
response	O
.	O
</s>
<s>
Windows	B-Application
3.1x	I-Application
displays	O
a	O
blue	O
screen	O
that	O
allows	O
the	O
user	O
to	O
press	O
Enter	B-Device
to	O
end	O
a	O
task	O
that	O
has	O
stopped	O
responding	O
to	O
the	O
system	O
(	O
if	O
such	O
a	O
task	O
exists	O
)	O
or	O
press	O
Control+Alt+Delete	B-Device
again	O
to	O
perform	O
a	O
soft	B-Device
reboot	I-Device
.	O
</s>
<s>
The	O
text	O
of	O
this	O
rudimentary	O
task	B-General_Concept
manager	I-General_Concept
was	O
written	O
by	O
Steve	O
Ballmer	O
.	O
</s>
<s>
Windows	O
9x	O
temporarily	O
halts	O
the	O
entire	O
system	O
and	O
displays	O
the	O
Close	O
Program	O
dialog	O
box	O
,	O
a	O
window	O
which	O
lists	O
currently	O
running	O
processes	B-Operating_System
and	O
allows	O
the	O
user	O
to	O
end	O
them	O
(	O
by	O
force	O
,	O
if	O
necessary	O
)	O
.	O
</s>
<s>
The	O
user	O
can	O
press	O
Control+Alt+Delete	B-Device
again	O
to	O
perform	O
a	O
soft	B-Device
reboot	I-Device
.	O
</s>
<s>
If	O
,	O
Windows	O
performs	O
a	O
soft	B-Device
reboot	I-Device
.	O
</s>
<s>
The	O
Windows	B-Device
NT	I-Device
family	I-Device
of	O
operating	B-General_Concept
system	I-General_Concept
,	O
whose	O
members	O
do	O
not	O
have	O
"	O
NT	O
"	O
in	O
their	O
names	O
since	O
Windows	B-Application
2000	I-Application
,	O
reserve	O
Ctrl+Alt+Delete	B-Device
for	O
the	O
operating	B-General_Concept
system	I-General_Concept
itself	O
.	O
</s>
<s>
Winlogon	O
,	O
a	O
core	O
component	O
of	O
the	O
operating	B-General_Concept
system	I-General_Concept
,	O
responds	O
to	O
the	O
key	O
combination	O
in	O
the	O
following	O
scenarios	O
:	O
</s>
<s>
Invoking	O
Windows	O
Security	O
When	B-Operating_System
a	I-Operating_System
user	I-Operating_System
is	I-Operating_System
logged	I-Operating_System
onto	I-Operating_System
a	O
Windows	O
computer	O
,	O
pressing	O
Ctrl+Alt+Delete	B-Device
invokes	O
Windows	O
Security	O
.	O
</s>
<s>
It	O
is	O
a	O
graphical	O
user	O
interface	O
that	O
allows	O
user	O
to	O
lock	O
the	O
system	O
,	O
switch	O
user	O
,	O
log	O
off	O
,	O
change	O
the	O
password	O
,	O
invoke	O
Windows	O
Task	B-General_Concept
Manager	I-General_Concept
,	O
or	O
end	O
the	O
Windows	O
session	O
by	O
shutting	B-Device
down	I-Device
,	O
rebooting	B-Device
or	O
putting	O
the	O
computer	O
into	O
sleep	O
or	O
hibernation	O
;	O
clicking	O
"	O
Cancel	O
"	O
or	O
pressing	O
the	O
Escape	B-Device
key	I-Device
returns	O
the	O
user	O
to	O
where	O
they	O
were	O
.	O
</s>
<s>
The	O
key	O
combination	O
always	O
invokes	O
Windows	O
Security	O
in	O
all	O
versions	O
and	O
editions	O
of	O
Windows	B-Device
NT	I-Device
family	I-Device
except	O
Windows	B-Application
XP	I-Application
.	O
</s>
<s>
Prior	O
to	O
Windows	B-Application
Vista	I-Application
,	O
Windows	O
Security	O
was	O
a	O
dialog	O
box	O
,	O
did	O
not	O
allow	O
user	O
switching	O
and	O
showed	O
the	O
logon	B-General_Concept
date	O
and	O
time	O
,	O
name	O
of	O
user	O
account	O
into	O
which	O
the	O
user	O
has	O
logged	O
on	O
and	O
the	O
computer	O
name	O
.	O
</s>
<s>
Starting	O
with	O
Windows	B-Application
Vista	I-Application
,	O
Windows	O
Security	O
became	O
full-screen	O
.	O
</s>
<s>
Secure	O
attention	O
Login	B-General_Concept
spoofing	O
is	O
a	O
social	O
engineering	O
trick	O
in	O
which	O
a	O
malicious	O
computer	O
program	O
with	O
the	O
appearance	O
of	O
a	O
Windows	O
login	B-General_Concept
dialog	O
box	O
prompts	O
for	O
user	O
's	O
account	O
name	O
and	O
password	O
to	O
steal	O
them	O
.	O
</s>
<s>
To	O
thwart	O
this	O
attack	O
,	O
Windows	B-Device
NT	I-Device
implements	O
an	O
optional	O
security	O
measure	O
in	O
which	O
Ctrl+Alt+Delete	B-Device
acts	O
as	O
a	O
secure	O
attention	O
key	O
combination	O
.	O
</s>
<s>
Once	O
the	O
protection	O
is	O
activated	O
,	O
Windows	O
requires	O
the	O
user	O
to	O
press	O
Ctrl+Alt+Delete	B-Device
each	O
time	O
before	O
logging	O
on	O
or	O
unlocking	O
the	O
computer	O
.	O
</s>
<s>
Unless	O
the	O
Windows	O
computer	O
is	O
part	O
of	O
a	O
Windows	B-General_Concept
domain	I-General_Concept
network	O
,	O
the	O
secure	O
attention	O
protection	O
is	O
disabled	O
by	O
default	O
and	O
must	O
be	O
enabled	O
by	O
the	O
user	O
.	O
</s>
<s>
Windows	B-Application
XP	I-Application
behavior	O
Windows	B-Application
XP	I-Application
introduces	O
Welcome	O
Screen	O
,	O
a	O
redesigned	O
logon	B-General_Concept
interface	O
.	O
</s>
<s>
The	O
Welcome	O
Screen	O
of	O
Windows	B-Application
XP	I-Application
,	O
however	O
,	O
does	O
not	O
support	O
the	O
secure	O
attention	O
scenario	O
.	O
</s>
<s>
It	O
may	O
be	O
disabled	O
in	O
favor	O
of	O
the	O
classic	O
plain	O
logon	B-General_Concept
screen	O
,	O
either	O
explicitly	O
by	O
the	O
user	O
or	O
as	O
a	O
consequence	O
of	O
the	O
Windows	B-Application
XP	I-Application
computer	O
becoming	O
part	O
of	O
a	O
Windows	B-General_Concept
domain	I-General_Concept
network	O
.	O
</s>
<s>
With	O
that	O
in	O
mind	O
,	O
Windows	B-Application
XP	I-Application
uses	O
the	O
Ctrl+Alt+Delete	B-Device
in	O
the	O
following	O
unique	O
scenarios	O
:	O
</s>
<s>
At	B-Operating_System
a	O
logon	B-General_Concept
prompt	O
,	O
the	O
key	O
combination	O
dismisses	O
Welcome	O
Screen	O
and	O
invokes	O
classic	O
logon	B-General_Concept
user	O
interface	O
.	O
</s>
<s>
When	O
a	O
user	O
is	O
logged	O
on	O
to	O
a	O
Windows	B-Application
XP	I-Application
computer	O
and	O
Welcome	O
Screen	O
is	O
enabled	O
,	O
pressing	O
the	O
key	O
combination	O
invokes	O
Windows	O
Task	B-General_Concept
Manager	I-General_Concept
instead	O
of	O
Windows	O
Security	O
.	O
</s>
<s>
Windows	B-Application
Vista	I-Application
and	O
the	O
next	O
versions	O
of	O
Windows	B-Device
NT	I-Device
did	O
not	O
inherit	O
any	O
of	O
the	O
above	O
.	O
</s>
<s>
In	O
OS/2	B-Application
,	O
this	O
keystroke	O
combination	O
is	O
recognized	O
by	O
the	O
OS/2	B-Application
keyboard	O
device	B-Application
driver	I-Application
,	O
which	O
notifies	O
the	O
session	O
manager	O
process	O
.	O
</s>
<s>
The	O
normal	O
session	O
manager	O
process	O
in	O
OS/2	B-Application
versions	O
2.0	O
and	O
later	O
is	O
the	O
parent	O
Workplace	O
Shell	O
process	O
,	O
which	O
displays	O
the	O
"	O
system	O
is	O
rebooting	B-Device
"	O
window	O
and	O
triggers	O
a	O
soft	B-Device
reboot	I-Device
.	O
</s>
<s>
If	O
it	O
is	O
pressed	O
twice	O
in	O
succession	O
OS/2	B-Application
triggers	O
an	O
immediate	O
soft	B-Device
reboot	I-Device
,	O
without	O
waiting	O
for	O
the	O
session	O
manager	O
process	O
.	O
</s>
<s>
In	O
both	O
cases	O
,	O
the	O
system	O
flushes	O
the	O
page	B-General_Concept
cache	I-General_Concept
,	O
cleanly	O
unmounts	B-Application
all	O
disc	O
volumes	O
,	O
but	O
does	O
not	O
cleanly	O
shut	O
down	O
any	O
running	O
programs	O
(	O
and	O
thus	O
does	O
not	O
save	O
any	O
unsaved	O
documents	O
,	O
or	O
the	O
current	O
arrangements	O
of	O
the	O
objects	O
on	O
the	O
Workplace	O
Shell	O
desktop	O
or	O
in	O
any	O
of	O
its	O
open	O
folders	O
)	O
.	O
</s>
<s>
Ctrl+Alt+Delete	B-Device
is	O
not	O
a	O
keyboard	O
shortcut	O
on	O
macOS	B-Application
.	O
</s>
<s>
The	O
original	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
Server	I-Operating_System
had	O
an	O
Easter	O
egg	O
in	O
which	O
pressing	O
(	O
as	O
the	O
Option	B-Device
key	I-Device
is	O
the	O
equivalent	O
of	O
Alt	B-Device
key	I-Device
on	O
a	O
Mac	O
keyboard	O
)	O
would	O
show	O
an	O
alert	O
saying	O
"	O
This	O
is	O
not	O
DOS	B-Device
!	O
</s>
<s>
On	O
some	O
Linux-based	O
operating	B-General_Concept
systems	I-General_Concept
including	O
Ubuntu	B-Operating_System
and	O
Debian	O
,	O
is	O
a	O
shortcut	O
for	O
logging	O
out	O
.	O
</s>
<s>
On	O
Ubuntu	B-Operating_System
Server	I-Operating_System
,	O
it	O
is	O
used	O
to	O
reboot	B-Device
a	O
computer	O
without	O
logging	O
in	O
.	O
</s>
<s>
+	O
Desktop	B-General_Concept
operating	I-General_Concept
systems	I-General_Concept
Platform	O
Key	O
combination	O
Function	O
Amiga	B-Device
Perform	O
a	O
hardware	O
reboot	B-Device
by	O
sending	O
a	O
reset	O
signal	O
to	O
system	O
via	O
keyboard	O
MCU	B-Architecture
( +	O
possible	O
extra	O
keycode	O
+	O
max	O
10s	O
delay	O
if	O
"	O
reset	O
warning	O
"	O
is	O
supported	O
and	O
in	O
use	O
)	O
.	O
</s>
<s>
BIOS	B-Operating_System
Perform	O
a	O
soft	B-Device
reboot	I-Device
without	O
memory	O
initialization	O
by	O
jumping	O
to	O
IPL	O
reset	B-General_Concept
vector	I-General_Concept
,	O
after	O
broadcasting	O
a	O
pending	O
shutdown	B-Device
event	O
(	O
on	O
AT	B-Operating_System
compatible	O
machines	O
)	O
.	O
</s>
<s>
DOS	B-Device
+	O
KEYB	O
Perform	O
a	O
soft	B-Device
reboot	I-Device
without	O
memory	O
initialization	O
by	O
jumping	O
to	O
IPL	O
reset	B-General_Concept
vector	I-General_Concept
,	O
after	O
broadcasting	O
a	O
pending	O
shutdown	B-Device
event	O
(	O
on	O
AT	B-Operating_System
compatible	O
machines	O
)	O
and	O
flushing	O
disk	O
caches	O
(	O
since	O
DOS	B-Device
6	O
,	O
or	O
with	O
FreeKEYB	O
loaded	O
)	O
.	O
</s>
<s>
QEMM	O
)	O
can	O
intercept	O
and	O
turn	O
this	O
into	O
a	O
quick	O
reboot	B-Device
.	O
</s>
<s>
If	O
more	O
than	O
one	O
task	O
is	O
running	O
under	O
multitaskers	O
like	O
DR-DOS	B-Application
,	O
this	O
will	O
only	O
kill	O
the	O
currently	O
running	O
foreground	O
task	O
.	O
</s>
<s>
DOS	B-Device
+	O
K3PLUS	O
or	O
FreeKEYB	O
Perform	O
a	O
soft	B-Device
reboot	I-Device
with	O
memory	O
initialization	O
(	O
aka	O
"	O
cold	O
reboot	B-Device
"	O
)	O
by	O
jumping	O
to	O
IPL	O
reset	B-General_Concept
vector	I-General_Concept
,	O
after	O
broadcasting	O
a	O
pending	O
shutdown	B-Device
event	O
(	O
on	O
AT	B-Operating_System
compatible	O
machines	O
)	O
and	O
flushing	O
disk	O
caches	O
.	O
</s>
<s>
Perform	O
a	O
hard	O
reboot	B-Device
by	O
triggering	O
the	O
chipset	O
's	O
reset	O
logic	O
,	O
after	O
broadcasting	O
a	O
pending	O
shutdown	B-Device
event	O
and	O
flushing	O
disk	O
caches	O
.	O
</s>
<s>
Windows	O
3.x	O
Close	O
unresponsive	O
applications	O
.	O
</s>
<s>
Performs	O
a	O
soft	B-Device
reboot	I-Device
if	O
pressed	O
twice	O
.	O
</s>
<s>
Windows	O
9x	O
Bring	O
up	O
"	O
Close	O
Program	O
"	O
dialog	O
box	O
(	O
a	O
simplistic	O
task	B-General_Concept
manager	I-General_Concept
)	O
.	O
</s>
<s>
Performs	O
a	O
soft	B-Device
reboot	I-Device
if	O
pressed	O
twice	O
.	O
</s>
<s>
After	O
logon	B-General_Concept
:	O
Brings	O
up	O
Windows	O
Security	O
;	O
in	O
Windows	B-Application
XP	I-Application
,	O
brings	O
up	O
Windows	O
Task	B-General_Concept
Manager	I-General_Concept
if	O
the	O
welcome	O
screen	O
is	O
enabled	O
,	O
otherwise	O
brings	O
up	O
Windows	O
SecurityUsed	O
in	O
Terminal	O
Services	O
to	O
send	O
the	O
command	O
to	O
the	O
remote	O
session	O
/	O
application	O
:	O
</s>
<s>
After	O
logon	B-General_Concept
:	O
Brings	O
up	O
Windows	O
Security	O
OS/2	B-Application
Bring	O
up	O
the	O
Window	O
List	O
(	O
unblocking	O
the	O
synchronous	O
input	O
queue	O
)	O
Perform	O
a	O
soft	B-Device
reboot	I-Device
,	O
(	O
twice	O
)	O
Halt	O
the	O
system	O
and	O
begin	O
a	O
system	O
dump	O
to	O
floppy	O
disk	O
TOS	B-Application
(	O
1.4	O
and	O
higher	O
)	O
,	O
MiNT	B-Application
Perform	O
soft	B-Device
reboot	I-Device
without	O
memory	O
initialization	O
(	O
warm	O
boot	O
)	O
Perform	O
soft	B-Device
reboot	I-Device
with	O
memory	O
initialization	O
(	O
cold	O
boot	O
)	O
Linux	B-Application
Signal	O
the	O
init	O
process	O
(	O
usually	O
configured	O
to	O
soft	B-Device
reboot	I-Device
)	O
Magic	B-Application
SysRq	I-Application
key	I-Application
:	O
Depending	O
on	O
the	O
function	B-Application
key	I-Application
,	O
performs	O
a	O
certain	O
low-level	O
function	O
.	O
</s>
<s>
Examples	O
:	O
sync	O
(	O
flush	O
caches	O
)	O
,	O
reboot	B-Device
(	O
forced	O
soft	B-Device
reboot	I-Device
)	O
,	O
unmount	B-Application
(	O
remount	O
filesystems	O
readonly	O
)	O
,	O
etc	O
.	O
</s>
<s>
macOS	B-Application
Force	O
quit	O
applications	O
Quit	O
all	O
applications	O
and	O
restart	B-Device
Quit	O
all	O
applications	O
and	O
shut	O
down	O
Show	O
restart	B-Device
,	O
sleep	O
or	O
shutdown	B-Device
dialog	O
Immediately	O
restarts	O
computer	O
.	O
</s>
<s>
BeOS	B-Application
and	O
click	O
an	O
application	O
's	O
entry	O
in	O
the	O
Deskbar	O
Kills	O
application	O
Xfce	B-Language
+	O
click	O
on	O
window	O
Kills	O
application	O
(	O
invokes	O
xkill	O
)	O
Lock	O
the	O
screen	O
and	O
invoke	O
the	O
screensaver	O
X	B-Operating_System
Window	I-Operating_System
System	I-Operating_System
Immediately	O
kills	O
the	O
X	B-Operating_System
server	O
(	O
the	O
key	O
combination	O
can	O
be	O
disabled	O
)	O
.	O
</s>
<s>
When	O
using	O
an	O
X	B-Device
Display	I-Device
Manager	I-Device
,	O
it	O
will	O
usually	O
start	O
the	O
X	B-Operating_System
server	O
again	O
.	O
</s>
<s>
+	O
Other	O
platforms	O
Platform	O
Key	O
combination	O
Function	O
TI-30XIIS	B-Device
Restarts	O
the	O
calculator	O
and	O
clears	O
RAM	B-Architecture
TI-80	B-Device
,	O
TI-81	B-Device
,	O
TI-82	B-Device
,	O
TI-83	B-Device
,	O
TI-84	B-Device
,	O
,	O
Shows	O
ROM	O
version	O
number	O
.	O
</s>
<s>
 [ Enter ] 	O
enters	O
self	O
test	O
mode	O
TI-85	B-Device
,	O
TI-86	B-Device
,	O
,	O
,	O
Shows	O
ROM	O
version	O
number	O
.	O
</s>
<s>
 [ Enter ] 	O
enters	O
self	O
test	O
mode	O
TI-89	B-Device
Restarts	O
the	O
calculator	O
and	O
clears	O
RAM	B-Architecture
Force	O
break	O
without	O
restarting	O
RAM	B-Architecture
,	O
,	O
Enter	B-Device
self	O
test	O
mode	O
Natural	O
display	O
Casio	O
calculators	O
Restarts	O
the	O
calculator	O
and	O
clears	O
RAM	B-Architecture
and	O
EEPROM	B-General_Concept
.	O
</s>
<s>
TI-99/4A	B-Device
Resets	O
machine	O
back	O
to	O
startup	O
screen	O
.	O
</s>
<s>
Voyage	O
200	O
Restarts	O
the	O
calculator	O
and	O
clears	O
RAM	B-Architecture
HP-48	B-Device
Restarts	O
RPL	O
,	O
clearing	O
the	O
Stack	O
and	O
PICT	O
,	O
closing	O
IO	O
,	O
and	O
returning	O
to	O
the	O
HOME	O
directory	O
(	O
but	O
not	O
purging	O
the	O
memory	O
)	O
As	O
above	O
,	O
but	O
also	O
purges	O
the	O
memory	O
Scientific	O
Atlanta	O
Explorer	O
DHCT	O
Samsung	B-Application
cable	O
boxes	O
(	O
on	O
settop	O
box	O
;	O
not	O
remote	O
)	O
Reboots	B-Device
box	O
Foxtel	O
Set-top-boxes	O
(	O
on	O
box	O
;	O
except	O
UEC	O
720	O
)	O
Power	O
cycles	O
the	O
machine	O
.	O
</s>
<s>
Microsoft	B-Application
Virtual	I-Application
PC	I-Application
Send	O
the	O
command	O
to	O
the	O
virtual	O
machine	O
.	O
</s>
<s>
Windows	B-Application
Virtual	I-Application
PC	I-Application
for	O
Windows	B-Device
7	I-Device
Send	O
the	O
command	O
to	O
the	O
virtual	O
machine	O
.	O
</s>
<s>
Oracle	B-Operating_System
VM	I-Operating_System
VirtualBox	I-Operating_System
Send	O
the	O
command	O
to	O
the	O
virtual	O
machine	O
.	O
</s>
<s>
Control-Alt-Delete	B-Device
can	O
also	O
mean	O
"	O
dump	O
,	O
"	O
or	O
"	O
do	O
away	O
with	O
"	O
.	O
</s>
<s>
For	O
example	O
,	O
in	O
the	O
Billy	O
Talent	O
song	O
"	O
Perfect	O
World	O
"	O
,	O
part	O
of	O
the	O
lyrics	O
include	O
the	O
sequence	O
and	O
associate	O
it	O
with	O
resetting	O
their	O
memory	O
and	O
escaping	O
from	O
a	O
situation	O
:	O
"	O
Control-Alt-Deleted	O
.	O
</s>
