Page 7 - slides.dvi
P. 7
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In
–
–
–
–
–
to
To
Operating
need
∼
1949:
The
I/O
user
large
Systems
by
=
Operators
reduce
—
operator
1955:
First
Management
Programmers
hate
cost,
programmers
something
paper
Evolution
feeds
like
machines
it.
hate
“Open
hire
it.
tape
Beginning.
it.
write
programmer
with
.
/
better.
an
cards,
.
=
Shop”.
stored-program
punch
vacuum
programs
collects
operator
:
operator.
and
machine
cards.
tubes.
output
submit
from
(EDSAC)
printer.
tape/cards
to
operator.
3
