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Microsoft Excel is a program that allows you to discover and reveal the insights hidden in your documents data.
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If you know a friend or relative that already has a Microsoft Home plan they can share it with up to five other people. You can simply request that they send you can invite via email in the Office Sharing page in their Microsoft account. This is only for non-commercial use though which means non-business related and only for personal reasons. You can create, edit and print documents for free although you will need to create a Microsoft ID to do so first.
So I purchased a refurbished Mac from Mac of all Trades. I did not get an original Mac drive…when I called Mac they helped me change the drive name to a Macintosh. Of course, you may be working in an office job where Excel and the like are already the defaults. If your school has signed up to Microsoft Education, all staff and students should be able access Office apps for free. To check, enter your education email address on the Microsoft website. Both offer a one-month free trial. Efficient files.
Excel Data Model. One-click forecasting. Create forecast charts based on existing data and predict future trends with a simple click. Not Included. Mobile apps for your devices. New mapping features. Transform geographic data into professional-looking visualizations in just a few steps. Recommended Charts. Always up to date.
Always have the latest Office apps, features, and services. Swipe to view more plans. Ready for Microsoft ?
Expand all Collapse all. How do I know if my computer can run Microsoft ? Is internet access required for Microsoft ? However, Internet access is required to install and activate all the latest releases of Office suites and all Microsoft subscription plans. For Microsoft plans, Internet access is also needed to manage your subscription account, for example to install Office on other PCs or to change billing options. In early versions of Excel, these programs were written in a macro language whose statements had formula syntax and resided in the cells of special-purpose macro sheets stored with file extension.
XLM in Windows. XLM was the default macro language for Excel through Excel 4. After version 5. All versions of Excel, including Excel are capable of running an XLM macro, though Microsoft discourages their use. Excel supports charts , graphs , or histograms generated from specified groups of cells. It also supports Pivot Charts that allow for a chart to be linked directly to a Pivot table. This allows the chart to be refreshed with the Pivot Table. The generated graphic component can either be embedded within the current sheet or added as a separate object.
These displays are dynamically updated if the content of cells changes. For example, suppose that the important design requirements are displayed visually; then, in response to a user's change in trial values for parameters, the curves describing the design change shape, and their points of intersection shift, assisting the selection of the best design.
Additional features are available using add-ins. Several are provided with Excel, including:. Versions of Excel up to 7. Versions 8. Version Microsoft Excel up until version used a proprietary binary file format called Excel Binary File Format. XLS as its primary format. Although supporting and encouraging the use of new XML-based formats as replacements, Excel remained backwards-compatible with the traditional, binary formats.
Support for some older file formats was removed in Excel Two epochs of the format exist: the OLE format, and the older stream format. Though the intended file extension for this format is. This feature is widely used by third-party applications e. The following example will be correctly opened by Excel if saved either as Book1.
Microsoft Excel , along with the other products in the Microsoft Office suite, introduced new file formats. The first of these. Windows applications such as Microsoft Access and Microsoft Word , as well as Excel can communicate with each other and use each other's capabilities.
The most common are Dynamic Data Exchange : although strongly deprecated by Microsoft, this is a common method to send data between applications running on Windows, with official MS publications referring to it as "the protocol from hell". It is very common in financial markets, being used to connect to important financial data services such as Bloomberg and Reuters.
OLE Object Linking and Embedding allows a Windows application to control another to enable it to format or calculate data. This may take on the form of "embedding" where an application uses another to handle a task that it is more suited to, for example a PowerPoint presentation may be embedded in an Excel spreadsheet or vice versa.
Excel users can access external data sources via Microsoft Office features such as for example. Excel can accept data in real-time through several programming interfaces, which allow it to communicate with many data sources such as Bloomberg and Reuters through addins such as Power Plus Pro. Programmers have produced APIs to open Excel spreadsheets in a variety of applications and environments other than Microsoft Excel.
These include opening Excel documents on the web using either ActiveX controls, or plugins like the Adobe Flash Player. All passwords except password to open a document can be removed instantly regardless of the Microsoft Excel version used to create the document. These types of passwords are used primarily for shared work on a document.
Such password-protected documents are not encrypted , and a data sources from a set password is saved in a document's header. The only type of password that can prevent a trespasser from gaining access to a document is password to open a document.
The cryptographic strength of this kind of protection depends strongly on the Microsoft Excel version that was used to create the document. In Microsoft Excel 95 and earlier versions, the password to open is converted to a bit key that can be instantly cracked. As regards services that use rainbow tables e. Password-Find , it takes up to several seconds to remove protection. In addition, password-cracking programs can brute-force attack passwords at a rate of hundreds of thousands of passwords a second, which not only lets them decrypt a document but also find the original password.
Due to the CSP, an Excel file can't be decrypted, and thus the password to open can't be removed, though the brute-force attack speed remains quite high. Therefore, users who do not change the default settings lack reliable protection of their documents.
The situation changed fundamentally in Excel , where the modern AES algorithm with a key of bits started being used for decryption, and a 50,fold use of the hash function SHA1 reduced the speed of brute-force attacks down to hundreds of passwords per second. In Excel , the strength of the protection by the default was increased two times due to the use of a ,fold SHA1 to convert a password to a key. It can edit and format text in cells, calculate formulas, search within the spreadsheet, sort rows and columns, freeze panes, filter the columns, add comments, and create charts.
It can't add columns or rows except at the edge of the document, rearrange columns or rows, delete rows or columns, or add spreadsheet tabs. Excel for the web is a free lightweight version of Microsoft Excel available as part of Office on the web, which also includes web versions of Microsoft Word and Microsoft PowerPoint. Excel for the web can display most of the features available in the desktop versions of Excel, although it may not be able to insert or edit them. Certain data connections are not accessible on Excel for the web, including with charts that may use these external connections.
Excel for the web also cannot display legacy features, such as Excel 4. There are also small differences between how some of the Excel functions work.
Microsoft Excel Viewer was a freeware program for Microsoft Windows for viewing and printing spreadsheet documents created by Excel. The first version released by Microsoft was Excel 97 Viewer. Microsoft advises to view and print Excel files for free to use the Excel Mobile application for Windows 10 and for Windows 7 and Windows 8 to upload the file to OneDrive and use Excel for the web with a Microsoft account to open them in a browser. In addition to issues with spreadsheets in general, other problems specific to Excel include numeric precision, misleading statistics functions, mod function errors, date limitations and more.
Despite the use of figure precision, Excel can display many more figures up to thirty upon user request. But the displayed figures are not those actually used in its computations, and so, for example, the difference of two numbers may differ from the difference of their displayed values.
Although such departures are usually beyond the 15th decimal, exceptions do occur, especially for very large or very small numbers. Serious errors can occur if decisions are made based upon automated comparisons of numbers for example, using the Excel If function , as equality of two numbers can be unpredictable.
Although this number has a decimal representation that is an infinite string of ones, Excel displays only the leading 15 figures.
In the second line, the number one is added to the fraction, and again Excel displays only 15 figures. In the third line, one is subtracted from the sum using Excel.
Because the sum in the second line has only eleven 1's after the decimal, the difference when 1 is subtracted from this displayed value is three 0's followed by a string of eleven 1's. However, the difference reported by Excel in the third line is three 0's followed by a string of thirteen 1's and two extra erroneous digits.
This is because Excel calculates with about half a digit more than it displays. Excel works with a modified version of the IEEE specification. See the main article for details. Besides accuracy in user computations, the question of accuracy in Excel-provided functions may be raised. Particularly in the arena of statistical functions, Excel has been criticized for sacrificing accuracy for speed of calculation.
As many calculations in Excel are executed using VBA , an additional issue is the accuracy of VBA, which varies with variable type and user-requested precision. The accuracy and convenience of statistical tools in Excel has been criticized, [72] [73] [74] [75] [76] as mishandling missing data, as returning incorrect values due to inept handling of round-off and large numbers, as only selectively updating calculations on a spreadsheet when some cell values are changed, and as having a limited set of statistical tools.
Microsoft has announced some of these issues are addressed in Excel Excel has issues with modulo operations. In the case of excessively large results, Excel will return the error warning NUM! Excel includes February 29, , incorrectly treating as a leap year , even though e. Thus a not necessarily whole number greater than or equal to 61 interpreted as a date and time are the real number of days after December 30, , , a non-negative number less than 60 is the number of days after December 31, , , and numbers with whole part 60 represent the fictional day.
Excel supports dates with years in the range —, except that December 31, , can be entered as 0 and is displayed as 0-jan Converting a fraction of a day into hours, minutes and days by treating it as a moment on the day January 1, , does not work for a negative fraction. Entering text that happens to be in a form that is interpreted as a date, the text can be unintentionally changed to a standard date format.
A similar problem occurs when a text happens to be in the form of a floating-point notation of a number. In these cases the original exact text cannot be recovered from the result. This issue has caused a well known problem in the analysis of DNA , for example in bioinformatics. As first reported in , [84] genetic scientists found that Excel automatically and incorrectly converts certain gene names into dates.
A follow-up study in found many peer reviewed scientific journal papers had been affected and that "Of the selected journals, the proportion of published articles with Excel files containing gene lists that are affected by gene name errors is The following functions return incorrect results when passed a string longer than characters: [90]. Microsoft Excel will not open two documents with the same name and instead will display the following error:.
The reason is for calculation ambiguity with linked cells. Microsoft originally marketed a spreadsheet program called Multiplan in Microsoft released the first version of Excel for the Macintosh on September 30, , and the first Windows version was 2.
This accomplishment solidified Microsoft as a valid competitor and showed its future of developing GUI software. Microsoft maintained its advantage with regular new releases, every two years or so. Excel 2. Versions prior to 2. The first Windows version was labeled "2" to correspond to the Mac version.
This included a run-time version of Windows. The magazine stated that the port of the "extraordinary" Macintosh version "shines", with a user interface as good as or better than the original.
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