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Keyboard
•
LSI Controller frees the input/output
(Z80-A based) processor
from
keyboard scan
and
related
tasks
• Located
in
a separate
case
for
convenience
• Model 16B and Enhanced Model
12
are
connected
to
the
display
console
via
a
built-in,
coiled
cord
that exits
at
the
lower,
back
part
of
the
keyboard
•
Standard
typewriter keys,
repeat
key
and
eight
general-purpose
function
keys
•
Four
modes
with
the following
priority
(highest
to lowest):
1.
Unshift
2.
Shift
3.
Caps
4.
Control
Floppy
Diskette Drives
Minimum
•
One
built-in,
8-inch,
double-sided
floppy
diskette drive
Maximum
•
One
built-in
and up
to
two
external, 8-inch,
double-sided,
floppy
diskette drives (floppy diskette
expansion
unit
needed
for
two
external drives)
Preventive
Maintenance
Interval
•
Typical
usage
(3,000
power-on hours
per
year);
Every
8000
power-on
hours
• Heavy usage
(8,000
power-on
hours per
year):
Fvery
5000
power-on
hours
Required Media
•
Radio
Shack
double-
or
single-sided, 8-inch
floppy diskettes
• Enhanced Model
II:
Radio
Shack
single-sided
f
8-inch floppy
diskettes
Data Transfer Rate
is
500,000
bits
per
second
(except Track
which has 250,000
bps).
Diskette
Life
is
3.5
million
passes
per
track.
To
prevent
limiting
life
by improper
handling,
follow
diskette-care
recommendations.
61
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