Radio Shack TRS-80 PC-4 Owner's Manual page 20

Trs-80 pc-4
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If the formula or substitution,statement do not conform to BASIC grammar or if the
calculation range of the computer is exceeded, an error will occur during execution and
an error message will be displayed. The following error messages are displayed for
manual calculation.
(Syntax error)
(Mathematical error)
ERR3
[ERR2
ERR2 P0-10
ERR3 P2-30
The following error messages are displayed for program calculation.
(A syntax error has occurred on line 10 of
program Pel.)
(A mathematical error has occurred on line 3el of
program P2.)
(Refer to page 61 for an explanation of error messages.)
*
If the calculation result exceeds ±9.99999999999 x 10+
99
,
an-overflow will occur and
an ERR 3 error message will be displayed. Also, if the result is less than
1.0
x
10-
99
,
an underflow will occur and the calculation result will become O.
For manual calculation as well as for program calculation and program write-in, key
operation is performed as follows.
(1) Alphabetical Input
Example:
Input ABC
Operation:
i
ABC
Example:
Input SIN
Operation:
I
SIN
Numerical input
Example:
Input 123
Operation:
Example:
Input 96.3
Operation:
I 96.3
-17-

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