Презентация на тему "Spreadsheets"

Презентация: Spreadsheets
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  • Презентация: Spreadsheets
    Слайд 1

    SPREADSHEETS

    EXCEL 2010

  • Слайд 2

    Spreadsheet

    A spreadsheet is an interactive computer application program for organization and analysis of information in tabular form. Spreadsheets developed as computerized simulations of paper accounting worksheets.

  • Слайд 3

    The program operates on data represented as cells of an array, organized in rows and columns. Each cell of the array is a model–view–controller element that can contain either numeric or text data, or the results of formulas that automatically calculate and display a value based on the contents of other cells.

  • Слайд 4

    The user of the spreadsheet can make changes in any stored value and observe the effects on calculated values. This makes the spreadsheet useful for "what-if" analysis since many cases can be rapidly investigated without tedious manual recalculation. Modern spreadsheet software can have multiple interacting sheets, and can display data either as text and numerals, or in graphical form.

  • Слайд 5

    In addition to the fundamental operations of arithmetic and mathematical functions, modern spreadsheets provide built-in functions for common financial and statistical operations. Such calculations as net present value or standard deviation can be applied to tabular data with a pre-programmed function in a formula. Spreadsheet programs also provide conditional expressions, functions to convert between text and numbers, and functions that operate on strings of text.

  • Слайд 6

    Spreadsheets have now replaced paper-based systems throughout the business world. Although they were first developed for accounting or bookkeeping tasks, they now are used extensively in any context where tabular lists are built, sorted, and shared.

  • Слайд 7

    First spreadsheet

    VisiCalc was the first electronic spreadsheet on a microcomputer, and it helped turn the Apple II computer into a popular and widely used system (1979). For IBM PC in 1981.

  • Слайд 8

    Screenshot of VisiCalc

  • Слайд 9

    MS-DOS

    Lotus 1-2-3 (1983) was the leading spreadsheet when DOS was the dominant operating system, was written specially for IBM PC => good performance. The first “killer application”

  • Слайд 10

    Lotus 1-2-3

  • Слайд 11

    Other MS-DOS spreadsheets

    Borland Quattro that replaced VisiCalc.

  • Слайд 12

    Now

    Excel now has the largest market share on the Windows and Macintosh platforms. A spreadsheet program is a standard feature of an office productivity suite; since the advent of web apps, office suites now also exist in web app form.

  • Слайд 13

    Microsoft Excel

    Since the mid 1990s Excel has been the domineering commercial electronic spreadsheet.

  • Слайд 14

    Open source software

    Gnumeric is a free, cross-platform spreadsheet program that is part of the GNOMEFree Software Desktop Project. OpenOffice.org Calc and the very closely related LibreOfficeCalcare free and open-source spreadsheets.

  • Слайд 15

    openOffice.org Calc spreadsheet

  • Слайд 16

    Web-based spreadsheets

    Office Web Apps Google Spreadsheets They have real-time updates from remote sources such as stock prices and currency exchange rates.

  • Слайд 17

    Google spreadsheet

  • Слайд 18

    Excel 2010

    Organize financial information Perform calculations Display results in different ways

  • Слайд 19
  • Слайд 20
  • Слайд 21

    Entering the data

    You can start with a template or begin with a blank worksheet, then

  • Слайд 22
  • Слайд 23

    More sources

    You can also import data from a text file, a Web source MS Access database In this case you click the Data tab and click your choice in the Get External Datagroup, then navigate to the file you want to use and click Open to add your data at the selected cell.

  • Слайд 24

    Some facts

    Number of rows 1 048 576 Number of columns 16 385 Width of column 255 characters Number of colours16 mln

  • Слайд 25

    Editing data

    Often you need to go back and make changes to your data after you have entered it. You can correct and update the data quickly either by replacing the contents of an entire cell or by editing the existing content.

  • Слайд 26

    Formatting cells

    You can considerably improve the look of your worksheet by using Excel’s many formatting features. Formatting your data serves a number of purposes: Helps others reviewing your data see easily what’s most important on the worksheet; Helps you organize your data so that you can easily find what you need later.

  • Слайд 27

    Example of a worksheet with some formatting

  • Слайд 28

    Predefined formats

    For this purpose, you can use Excel’s predefined formats to choose a look for your cells that makes the data stand out. The cell styles available in the Styles group of the Home tab are coordinated with the theme you select for the worksheet, so all colors and fonts available are consistent with the overall theme you have chosen.

  • Слайд 29

    Formatting numbers

    When you look at columns and rows full of numbers it might not be clear what those numbers represent. Are they values showing dollar amount? Are they percentages of something? You can improve the readability of your workbook by using standard numeric formatting to make everything as clear as possible for those viewing your worksheet.

  • Слайд 30

    Moving, copying, pasting

    Moving, copying and pasting data is similar to the same in Word. However, when you copy data in Excel, you’ll need to have a blank area ready to receive the data; otherwise, Excel will overwrite any existing data. You can also tell Excel to copy the contents of a cell to a group of adjacent cells.

  • Слайд 31

    Live Preview

    Excel 2010 includes Paste with Live Preview feature to see how your information will look when pasted using different paste options. You can choose how you want the information to be pasted both before and after you add it to your worksheet.

  • Слайд 32

    Adding and deleting columns and rows

    When you add or delete several rows or columns at one time or clear all the contents of multiple rows or columns, select them before you right-click. To select nonadjacent rows or columns. Hold down the Ctrl key as you click each row or column header. To quickly clear the content of a selected cell or cells without removing any formatting, press the Delete key.

  • Слайд 33

    Hiding columns and rows

    When you create a worksheet, it sometimes contains columns and rows of data that aren’t relevant for every review or for every use of the worksheet. You can suppress the display of data you do not want displayed for general view by hiding columns and rows. Late you can reveal the data once again easily to return the data to normal view.

  • Слайд 34

    To do this,

    You select rows or columns and then right-click on the selected headers, and choose Hide from the shortcut menu. BUT, to make sure that you do not accidentally distribute a worksheet that contains information you do not want to share with others, make sure there are no hidden rows or columns in your final version of the workbook.

  • Слайд 35

    How?

    To check for hidden rows or columns, run the Document Inspectorby clicking the File tab, and then clicking Check For Issuesin the Prepare Sharinggroup. Click Inspect Document in the list.

  • Слайд 36

    Formatting cell dimensions

    You can set the Column width Row height Adjust the Height or Width to fit the content

  • Слайд 37

    Formatting Cell Dimensions

  • Слайд 38

    Preparing for Printing

    Set page dimensions: On the Page Layout tab click Margin and set the ones you want to. Click the Orientation button and click either Portraitor Landscape Click the Size button, and select the paper size Specify the scaling to change the size of the printed worksheet Specify whether you want to display and/or print the gridlines and the headings

  • Слайд 39

    Part II

  • Слайд 40

    Creating a Data Series

  • Слайд 41

    Formatting Cell Dimensions

  • Слайд 42

    Organizing Your Worksheets

  • Слайд 43

    Inserting & Deleting a Worksheet

  • Слайд 44

    Operations in formulas

  • Слайд 45

    Formulas

    When you scroll the mouse over a formula Excel will have a small dialog box that explains the purpose of each formula.

  • Слайд 46

    References

    Relative Absolute Mixed References to other worksheets

  • Слайд 47
  • Слайд 48

    Database functions

  • Слайд 49

    Date and time functions

  • Слайд 50

    Text functions

  • Слайд 51

    Financial functions

  • Слайд 52

    Information functions

  • Слайд 53

    Logical functions

  • Слайд 54

    Lookup and reference functions

  • Слайд 55

    Math and trigonometry functions

  • Слайд 56

    Statistical functions

  • Слайд 57

    Engineering functions External functions

  • Слайд 58

    Comments

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