Texas Instruments TI Programmable 57 User Manual

SECTION 1: BASIC
KEYS AND FUNCTIONS
CLEARING THE CALCULATOR
There are several procedures that allow you to clear various parts of your
calculator, or to clear the entire machine — depending on your needs as
you proceed through a problem.
[CE] The [£8] (clear entry) key clears the last number you entered into
the calculator, as long as that number wasn't followed by a
function or operation key. (So if you accidentally hit a [5] instead
of a [Jin the middle of an entry, just hit (c) and try again.) This
key will also stop the display from flashing if you've created an
error condition in your calculator (we'll say more about this later).
The [€€] key, however, doesn't affect pending operations, what's
stored in the memories, or calculated results.
(CLR]_tThe
(Gl
(clear)
key
(upper
right
on
your
machine)
essentially
clears
the
entire machine,
except
for
statistical
data
stored
in the
memories,
settings
made on
the
display
format,
and
program
steps.
—
This
allows
you
to
clear
only
the
“'t’
register
(or
"'t”
memory).
This
capability
is
beneficial
in
programming
and
with
statistical
functions.
We'll
look
at
it
in more
detail
later.
[INV] — This key sequence clears everything in the machine
except program steps and decimal settings. (Technically, this
doesn’t
clear
the
first
two
registers
of
the
math
stack,
but
this
will
seldom be a problem.)
OFF-ON
—
Turning
the
calculator
OFF,
then
ON
again
clears
everything.
In
fact,
it's
one
sure
way
to
quickly
clear
all
your
program
steps,
memories,
display
settings,
everything!

Texas Instruments TI Programmable 57 Specifications

General

Brand	Texas Instruments
Model	TI Programmable 57
Category	Calculator
Language	English