- Definition, Rules, and Examples. When playing with numbers, it often is the case wherein we come across a string of numbers and operators, and the solution of such an expression is done using the PEMDAS rule. In PEMDAS, there are several different ways to format numbers and answers. Note that formatting does not change the actual number, it only changes what appears on the screen. In other words, if you have the significant figure precision set to 2, the number 5.4321 will be displayed as 5.4, but all calculations will use the 5.4321 value.
6. Number Formatting
PEMDAS Widget is a simple yet powerful calculator for Dashboard in OS X. Not only does PEMDAS Widget let you work with equations, variables, different bases, and many functions, but since it runs in Dashboard, it's lightweight and is always just a key press away. (PEMDAS Warning) This calculator solves math equations that add, subtract, multiply and divide positive and negative numbers and exponential numbers. You can also include parentheses and numbers with exponents or roots in your equations. Use these math symbols.
In PEMDAS, there are several different ways to format numbers and answers. Note that formatting does not change the actual number, it only changes what appears on the screen. In other words, if you have the significant figure precision set to 2, the number 5.4321 will be displayed as 5.4, but all calculations will use the 5.4321 value.
Formatting Types
There are several different ways that PEMDAS can format numbers:
- Float: Leaves the number alone.
- Scientific: Puts the number in scientific notation.
- Engineering: Puts the number in engineering notation, which is similar to scientific except the exponents are shown in multiples of 3.
- Percent: Puts the number into 'percent' form, which is similar to Float, except the number has been multiplied by 100.
- Binary: Puts the number into binary (base 2) form. The number is prefixed with 0b. *
- Octal: Puts the number into octal (base 8) form. The number is prefixed with 0o. *
- Hexadecimal: Puts the number into hexadecimal (base 16) form. The number is prefixed with 0x. *
* Note that when Binary, Octal, or the Hexadecimal formatting is applied to a non-integer number, it will be floored prior to formatting. When this happens, a (Floored) notice will appear after the number. See below for examples.
Examples are in the sections below.
Float Formatting Type
Using the Float preference:
123456.78
= 123456.78
0.012345
= 0.012345
Scientific Formatting Type
Using the Scientific preference:
123456.78
= 1.2345678e5
0.012345
= 1.2345e-2
Using the Scientific preference, with decimal places limited to 4 (see the Decimal Places below for more information on limiting decimal places):
123456.78
= 1.235e5
0.012345
= 1.235e-2
Engineering Formatting Type
Using the Engineering preference.
123456.78
0.012345
0.012345
= 12.345e-3
Using the Engineering preference, with decimal places set to 4:
123456.78
= 123.4568e3
0.012345
= 12.3450e-3
Percentage Formatting Type
Using the Percentage preference, and Thousands Separators enabled:
123456.78
= 12,345,678%
0.012345
= 1.2345%
Binary Formatting Type
Using the Binary preference
123456.78
= 0b0001 1110 0010 0100 0000 (Floored)
0.012345
= 0b0 (Floored)
255
= 0b1111 1111
64
= 0b0100 0000
Octal Formatting Type
Using the Octal preference:
123456.78
= 0o361100 (Floored)
0.012345
= 0o0 (Floored)
255
= 0o377
64
= 0o100
Hexadecimal Formatting Type
Using the Hexadecimal preference:
123456.78
= 0x1E240 (Floored)
0.012345
= 0x0 (Floored)
255
= 0oFF
64
= 0x40
Significant Figures
You can limit the amount of significant figures that are displayed. If the number has fewer significant figures than the amount you specify, PEMDAS will leave the number alone.
Examples:
With significant figures being limited to 4 significant figures:
123456.78
= 123500
0.012345
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= 0.01235
0.012
= 0.012
Decimal Places
You can set the amount of decimals to be displayed. This preference can be useful when dealing with things like money.
Examples:
With decimal places being set to 4 decimal places:
Clear app mac download. 123456.78
= 123456.7800
0.012345
= 0.0123
0.012
= 0.0120
0.000012
= 0.0000
Thousands Separators
Thousand separators are only available when the number is formatted as a Float or a Percent. In locales that use a decimal (.) as a radix point, the thousands separator is a comma, while in regions that use a comma as a radix point, the thousands separator is a space.
Thousands separators are enabled by default. This can be changed in the Formatting tab on the back of the widget by unchecking the 'Use Thousands Separators' preference. The thousands separator character can be modified by changing the 'Thousands Separator' selection on the back of the widget.
Examples:
123456.78
= 123,456.78
| Previous: Equation History View | Index | Next: Updates |
Version 2.0 features a new, sleeker look in keypad and equation history view, and adds a third, mini-view, which reduces the view to just equation and answer. The equation history view has been redesigned, and now displays equations with their results directly below, as well as a list of all variables in the current session. Nearly the entire interface has been re-written in response to user feedback, improving on its original, award-winning design. Every aspect of its GUI, keypad layout, use of color, typography, display and entry fields, and keyboard shortcuts contribute to the usability of PEMDAS.
PEMDAS, which is pronounced like 'them/mass', is an acronym for the order in which mathematical operations are executed: Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction. The text/numeric input and display makes the naming and storage of variables simple and convenient. The display also offers decimal, binary, hexadecimal or octal base modes. Significant Figure and Decimal Place formatting is user adjustable, and thousands separators can be turned on or off. The calculator supports trigonometric, hyperbolic, and exponential/logarithmic functions, parentheses, percentages, exponents, variables, and it lists all equations in the current session for easy access to variables and previously calculated results.
* Advanced, scientific calculator in compact, convenient Dashboard widget
* Keyboard input of user-assigned variables
* Color-coded keypad/control panel
* Calculates trigonemetric functions using degrees or radians
* Calculates exponential/logarithmic and hyperbolic functions
* Answer key automatically enters result of previous calculation
* Works in decimal, binary, octal, and hexadecimal base number systems
* Floating point, percentage, scientific or engineering number display formats
Pemdas Widget Meaning
* Equation history mode shows all equations and associated results* Ideal, practical tool for many basic scientific and engineering problems
* Available free of charge for Mac OS X* Also available as a dedicated application for iOS and Mac OS X
'The most important feature of PEMDAS Widget is that it lets you quickly and easily perform calculations with equations and variables,' said Michael Filippone, developer of PEMDAS. 'Many other calculators that can work with equations have steep learning curves and/or complicated interfaces, and many are desktop apps that you don't always have open.'
System Requirements:
* Mac OS X 10.5.8 or later
* 0.9 MB
Pemdas Widget Code
Pricing and Availability:
Pemdas Apps
Pemdas With Decimals
PEMDAS 2.0 Dashboard Widget is free, and available now for download. PEMDAS is also available as an app for iOS.