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I/O
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STC89C51, I/O
鎺ュ彛
Abstract
With
the
infiltration
in
the
social
field
of
the
computer
in
recent
years,
the
application
of
the
one-chip
computer
is
moving
towards
deepening
constantly,
drive
tradition
is
it
measure
crescent
benefit to upgrade day
to
control
at
the
same
time.
In
measuring
in
real
time
and
automatically
controlled
one-chip
computer
application
system,
the
one-chip
computer
often
uses as a key part, only one-chip computer respect knowledge is not enough,
should
also
follow
the
structure
of
the
concrete
hardware
,
and
direct
against
and use the software of target鈥檚 characteristic to combine concretly, in
order to do perfectly.
The
smallest
system
one
chip
computer
is
in
expands
at
the
base
of MCS-51
one
chip
computer.
Make
it
used
more
convient
in
the
test
system.
this
design
mainly expands I/O in the take 51 on chip computer, expands the timer fixed
time
scope,
expands
the
keyboard
to
demonstrate
the
connection
and
writes
the