Calculated-industries 8020 User Manual download pdf (Page 46)

POCKET REFERENCE GUIDE — 45

ACCURACY/ERRORS

Accuracy/Display Capacity

Your calculator has an eleven digit display.

This is made up of seven digits (normal

display) and four digits for the fraction. In a

standard calculation, each calculation is

carried out internally to ten digits and

rounded to a seven-digit standard display.

A 5/4 rounding technique is used to add 1

to the least significant digit in the display if

the next non-displayed digit is five or more.

If this digit is less than five, no rounding

occurs.

Errors

When you make an incorrect entry, or the

answer is beyond the calculator's ability, it

displays the word “ERROR.” To clear an

error, press the o button twice. At this

point you must determine what caused the

error and re-key the entry. An error also

occurs if you enter a mathematical impos-

sibility such as division by zero.

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