22
k
k
k
k
k
Overflow and Errors
Exceeding a specified input or calculation range, or attempting an illegal input causes
an error message to appear on the display. Further operation of the calculator is
impossible while an error message is displayed. The following events cause an error
message to appear on the display.
• When any result, whether intermediate or final, or any value in memory exceeds
±
9.999999999
×
10
99
(Ma ERROR).
• When an attempt is made to perform a function calculation that exceeds the input
range (Ma ERROR).
• When an illegal operation is attempted during statistical calculations (Ma ER-
ROR). For example, attempting to obtain 1VAR without data input.
• When the capacity of the numeric value stack or command stack is exceeded (Stk
ERROR). For example, entering 25 successive
(
followed by 2
+
3
*
4
w
.
• When an attempt is made to perform a calculation using an illegal formula (Syn
ERROR). For example, 5
**
3
w
.
• When you try to perform a calculation that causes memory capacity to be exceeded
(Mem ERROR).
• When you use a command that requires an argument, without providing a valid
argument (Arg ERROR).
• When an attempt is made to use an illegal dimension during matrix calculations
(Dim ERROR).
• Other errors can occur during program execution. Most of the calculator’s keys
are inoperative while an error message is displayed. You can resume operation
using one of the two following procedures.
• Press the
A
key to clear the error and return to normal operation.
• Press
d
or
e
to display the error.
k
k
k
k
k
Memory Capacity
Each time you press a key, either one byte or two bytes is used. Some of the functions
that require one byte are:
b
,
c
,
d
, sin, cos, tan, log, In,
, and
π
. Some of the
functions that take up two bytes are
d
/
dx
(, Mat, Xmin, If, For, Return, DrawGraph,
SortA(, PxIOn, Sum, and
a
n
+1
.
When the number of bytes remaining drops to five or below, the cursor automatically
changes from “ _ ” to “
v
”. If you still need to input more, you should divide your
calculation into two or more parts.
• As you input numeric values or commands, they appear flush left on the dis-
play. Calculation results, on the other hand, are displayed flush right.
1 - 1
Before Starting Calculations...
P.399
P.50
P.401
