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Spreadsheet SoftwareSpreadsheet Software
CS 100
Mount Union College
Spreadsheet BasicsSpreadsheet Basics
Screen area is divided into rows and columns
Microsoft Excel spreadsheets have 65,536 rows– identified by number– approx. 24 on screen at a time (depends on
screen size)
Spreadsheet BasicsSpreadsheet Basics
Excel spreadsheets have 230 columns– identified by letter
A to Z, then AA to AZ, then BA to BZ, ..., to IV
– not all on screen at a time Intersection of a row and column is called a
CELL– Basic unit of all spreadsheet operations– identified by column letter(s) and row number
Operating ModesOperating Modes
Ready mode– used for moving current cell pointer around the
spreadsheet Edit mode
– data items are being entered/changed in a cell Other, special-purpose modes
– move, copy, recalculate, etc.– depends on current operation requested by user
What Can Go Into A Cell?What Can Go Into A Cell?
Labels - describe parts of the spreadsheet Numbers - can be used in calculations Formulas - specify calculations to be
performed Functions - built-in operations the
program knows already
Arithmetic Operators in Arithmetic Operators in FormulasFormulas
+ : Addition - : Subtraction * : Multiplication / : Division Can be used with Numbers or Cell
References Formulas ALWAYS start with =
Ranges of CellsRanges of Cells
Many spreadsheet operations apply to more than one cell
A rectangular group of cells is called a RANGE– Identified by the two cells at the corners of the
rectangle– Cell references are separated by a colon ( : )– ex. A1:B6, B8:B12, C3:H3
FunctionsFunctions
Perform some calculation on a range of cells
SUM(F4:F10) -- add up all values in one column
AVERAGE(B18:G18) -- find average of a row
others: MIN, MAX, STDDEV, ….
FunctionsFunctions
Two ways to add all values from D10 through D15– hard way: =D10+D11+D12+D13+D14+D15– easy way: =SUM(D10:D15)
What if range changes to D10 through D215?– USE FUNCTIONS WHENEVER YOU CAN!
Types of Spreadsheets - Types of Spreadsheets - TemplatesTemplates
General framework of a problem Has labels to identify where values should
be placed Also has formulas and functions for
calculations NO SPECIFIC DATA ENTERED YET
Types of Spreadsheets - Types of Spreadsheets - InstancesInstances
Template with data filled in Solves a specific instance of the general
problem
How to Solve Problems in How to Solve Problems in Excel...Excel...
Construct rough sketch of worksheet on paper or mentally
Build a Template– SAVE TO DISK before adding specific data
Retrieve Template from disk and fill with data for each problem instance desired
Spreadsheet SoftwareSpreadsheet SoftwareSpreadsheet SoftwareSpreadsheet Software
CS 100
Mount Union College
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