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Function Key Index
Function keys pressed from the keyboard execute individual functions as
they are pressed. Input numbers and answers are displayed. Except
where otherwise indicated, each function keylisted below operates from
the keyboard and as a recorded instruction in a program.
o [T o~
[7] Pressed before
function key, selects
gold function print-
ed above key.
9] Pressed before
function key, selects
blue function printed
on lowerface of key.
Clear
(non-
programmable) after
(1],
(9], (s10), (e,
(Gs8), or
cancels that key.
Digit Entry
Enters a
copy of number
displayed in X-
register. Used to
separate numbers.
Changes sign
of mantissa or
exponent of 10 in
displayed X-register.
(eex] Enter ex-
ponent. After press-
ing, next numbers
keyed in are
exponents of 10.
0 through 9
Digit keys.
. Decimal point.
Number
Manipulation
Clear
Clears contents of
stack (X, Y, Z, T).
Rolls down
contents of stack
for viewing in dis-
played X-register.
Exchanges
contents of X- and
Y-registers of stack.
Clears
contents of display-
ed X-register to zero.
Display Control
Fixed point
display. Followed by
a number key,
selects fixed point
notation display.
[scr) Scientific
display. Followed by
a number key,
selects scientific
notation display.
[£8¢] Engineering
display. Followed by
a numberkey,
selects engineering
notation display.
wat] Mantissa (non-
programmable).
Temporarily dis-
plays all 10 digits of
the mantissa of the
number in the
X-register.
Number Alteration
~es] Gives ab-
solute value of
numberin displayed
X-register.
_INT| Leaves only
integer portion of
numberin displayed
X-register by
truncating fractional
portion.
Aac ] Leaves only
fractional portion of
number in displayed
X-register by
truncating integer
portion.
Manual Storage
Store. Follow-
ed by number key,
stores displayed
number in storage
register specified.
Also used to perform
storage register
arithmetic.
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