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Not so long ago, industrial Man-Machine
Interface (MMI) meant little
more than LEDs, a few switches,
a numerical keypad and maybe the
odd buzzer.
These days, people have grown
accustomed to the rich graphical
and multimedia environment offered
by PCs. This is now becoming more
commonplace within new markets,
such as industrial machinery, due
to the cost reductions that seem
to be inherent in the electronics
business.
Typically, a latest specification
MMI mimics or even exceeds the
interface offered on a PC. So for
instance, graphics displays are
replacing character modules –
often offering full color and high
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resolution screens. In addition, touchscreen
interfaces are becoming more
and more common and are replacing
the older style membrane keypads.
Finally of course, the advent of
low cost DSP technology means that
audio interfaces for industrial
equipment have moved on from bleeps
and buzzes to synthesized instructions
and warnings. So, while most industrial
equipment doesn’t offer the iPhone
standard of human interfaces, they
are starting to get remarkably close in
many cases.
This edition of FTM will look at the
full spectrum of solutions for MMI
designs; from new technology,
enabling the latest generation of
devices, to improved components
for more effective implementation of
existing interfaces.
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