This article was previously published under Q187696
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This article describes changes made to the Calculator application inWindows NT 4.0 Service Pack 4.
Switching Between Standard and Scientific
In Service Pack 4 and later, Calculator now clears the display whenswitching between the Standard and Scientific views. To transfer numbersbetween Standard and Scientific view, follow these steps:
Click MS to store the displayed number.
On the View menu, click the desired view.
Click MR to recall the stored number.
NOTE: A number typed in hexadecimal, octal, or binary format will beconverted to decimal format when transferring from Scientific to Standardview.
Understanding Extended Precision
Extended Precision, a new feature of Calculator, means that all operationsare accurate to at least 32 digits. Calculator also stores rational numbersas fractions to retain accuracy. For example, 1/3 is stored as 1/3, ratherthan .333. However, errors accumulate during repeated operations onirrational numbers. For example, Calculator will truncate pi to 32 digits,so repeated operations on pi will lose accuracy as the number of operationsincreases.
New Additional Information
The following applies to all versions of the Calculator even though it isnot documented in Service Pack 3 and earlier.
Performing Calculations with Large Numbers
In the hexadecimal, octal, and binary number systems, Calculator displaysonly the lower digits of an answer when the result has more digits thanyour display size allows. This behavior mimics the way calculations work incomputers.
DWORD results can contain up to eight digits; Word results can contain upto four digits; and Byte results can contain up to two digits.
For example, using the hexadecimal number system displayed as Word, thelargest result you can generate is FFFF (equal to 65535 in decimal). If youdouble that number (FFFFx2), the answer is 1FFFE. This contains fivedigits, so Calculator will display only the lower four digits of theanswer: FFFE.