Editing Windows Calculator (section)

===Windows 7===
In [[Windows 7]], separate programmer, statistics, unit conversion, date calculation, and worksheets modes were added. Tooltips were removed. Furthermore, Calculator's interface was revamped for the first time since its introduction. The base conversion functions were moved to the programmer mode and statistics functions were moved to the statistics mode. Switching between modes does not preserve the current number, clearing it to 0.

The highest number is now limited to 10<sup>10000</sup> again.

In every mode except programmer mode, one can see the history of calculations. The app was redesigned to accommodate [[multi-touch]]. Standard mode behaves as a simple checkbook calculator; entering the sequence <kbd>6 * 4 + 12 / 4 - 4 * 5</kbd> gives the answer 25. In scientific mode, [[order of operations]] is followed while doing calculations (multiplication and division are done before addition and subtraction), which means <kbd>6 * 4 + 12 / 4 - 4 * 5</kbd> = <samp>7</samp>.

In programmer mode, inputting a number in decimal has a lower and upper limit, depending on the data type, and must always be an integer. Data type of number in decimal mode is signed n-bit<ref>Where n is either: 8 for Byte, 16 for Word, 32 for Dword, or 64 for Qword.</ref> integer when converting from number in hexadecimal, octal, or binary mode.

{| class="wikitable" style="text-align:right"
|-
! Data type !! Data type size !! Lower limit !! Upper limit
|-
! Byte  
|  8 bit&emsp; || &minus;128 || 127
|-
! Word  
| 16 bit&emsp; || &minus;32,768 || 32,767
|-
! Dword 
| 32 bit&emsp; || &minus;2,147,483,648 || 2,147,483,647
|-
! Qword 
| 64 bit&emsp; || &minus;9,223,372,036,854,775,808 || 9,223,372,036,854,775,807
|}
On the right side of the main Calculator{{Clarify|reason=What does it mean by "the right side"?|date=May 2024}}, one can add a panel with date calculation, unit conversion and worksheets. Worksheets allow one to calculate a result of a chosen field based on the values of other fields. Pre-defined templates include calculating a car's fuel economy (mpg and L/100&nbsp;km),<ref>[http://malektips.com/windows-7-calculate-fuel-economy.html Calculate Fuel Economy - Windows 7 (MalekTips)]</ref> a vehicle lease, and a mortgage. In pre-beta versions of Windows 7, Calculator also provided a Wages template.