<s>
The	O
Atlas	B-Application
Supervisor	I-Application
was	O
the	O
program	O
which	O
managed	O
the	O
allocation	O
of	O
processing	O
resources	O
of	O
Manchester	O
University	O
's	O
Atlas	B-Device
Computer	I-Device
so	O
that	O
the	O
machine	O
was	O
able	O
to	O
act	O
on	O
many	B-Operating_System
tasks	I-Operating_System
and	O
user	B-General_Concept
programs	I-General_Concept
concurrently	I-General_Concept
.	O
</s>
<s>
Its	O
various	O
functions	O
included	O
running	O
the	O
Atlas	B-Device
computer	I-Device
's	O
virtual	B-Architecture
memory	I-Architecture
(	O
Atlas	B-Application
Supervisor	I-Application
paper	O
,	O
section	O
3	O
,	O
Store	O
Organisation	O
)	O
and	O
is	O
‘	O
considered	O
by	O
many	O
to	O
be	O
the	O
first	O
recognisable	O
modern	O
operating	O
system’	O
.	O
</s>
