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ohjain

Ohjain is a Finnish noun meaning controller, control unit, or guiding device. It comes from the verb ohjata meaning to guide, plus the suffix -in, forming a noun that denotes an instrument or device that directs a process. In technical contexts, ohjain refers to a component that directs the operation of a system, either as hardware or as software.

In electronics and embedded systems, ohjain typically denotes a control unit such as a microcontroller (mikro-ohjain)

Distinct from the related term laiteohjain, which is used for device drivers, ohjain emphasizes the control

or
a
dedicated
control
module
on
a
circuit
board.
In
automotive
and
industrial
automation,
control
units
or
controllers
are
commonly
described
as
ohjain,
often
within
compound
terms
like
ohjainyksikkö
or
ohjausjärjestelmä.
In
software
engineering,
parts
of
a
program
that
implement
control
logic
can
also
be
described
as
an
ohjain,
for
example
a
motor,
process,
or
user
interface
controller.
function
of
a
component
rather
than
its
data
transfer
interface.
The
usage
can
vary
by
context,
but
the
core
meaning
remains
a
device
or
module
that
guides
or
regulates
a
system’s
behavior.
Related
terms
include
mikro-ohjain,
ohjainyksikkö,
and
ohjausjärjestelmä.