The X# keys allow entering a
number by using Verbal Numerals (H for
Hundred, T for
Thousand and M for
Million - US Patent 5,623,433).
Verbal Numerals are useful when the input
number has several zeroes in it. The user enters the number as it
is pronounced, and the logic of the system puts the zeroes in the right
position. This usually requires less keystrokes. For example, to
enter the number "Two million five thousand and two" just press "2
M 5 T 2" which only requires five keystrokes. To stop
the Verbal Numeral mode in the middle of entering
a number, press the X# key. The yellow background of the input area
indicates that the number is being entered as a Verbal Numeral. Try pressing the X#
key several times.
Try this example:
H M 7 T X# 123
Notice that 123 is added to the right side of the number as in a regular
The "Undo" key undoes the
effect of the previous keystrokes in the Input Display.
Try this example: 5 M 3 H 5 Undo 8 Undo Undo Undo
5 H 3
The "$" key on the left of
the Total Display displays the total and the Memory contents (in the
bottom display) in currency mode with two decimals.
The "K" key in the left of
the "Input Display" makes your entry a Constant data that is useful when
the same arithmetic operation should be repeated multiple times with the
same number just by pressing the "=" key several times. To stop
this mode press the "K" key again.
Try this example: 10 M +
150 K = = = K X 1.1 $
K = = K + 123 =
A memory Display with a
Memory Recall key [m] will appear only when there is some value stored
in memory. The "ms" key swaps the
contents of the Memory Display with the contents of the Total Display
while the "m" key on the left of the Memory Display copies its content
to the Input Display.
Try this example:
125 + 25 = m+ x 2 =
ms + 50 + 10 + m = ms
Want to calculate the tip
for a good service in a restaurant where the total bill is $87.60?
Try this example: 87.6 + 15
% = $ or
just 87.6 = 15 %
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