Spreadsheets

CIL 102‘08 Fall

Basic Concepts

• Cell– Column Letter

A..Z,AA..AZ,BA…

– Row number

• Cell AddressAlphaNumeric, C55

• Labels• Values• Formulas

• Navigation– Arrow keys– Use of cntl– Use of End key– Home

• F keys – F4 and addressing

• Cell Address: Combination of a– Column letter– Row Number

Labels, Values

• Contents of a cell– Labels– Values– Formulas

Typing Formulas

• Let the system help you insert your formula– First insert sample values

before constructing the formula.

– Never type in a cell address, point to the cell

– Start with the cursor in the cell where the formula belongs.

– Press “=“ to start

Typing Formulas

• Know your formula2*(l + w)

• After “=“ start typing.• To insert a value, point

to it and the system fills in the address.

Typing Formulas

• Complete the formula– Each time you must

reference a cell, point to it. Note how each reference is highlighted

– Complete the formula

Typing Formulas

• Change values– The formula recalculates

Built-in Functions

• Categories– Autosum– Recent– Financial– Logical– Text– Date/Time– Look-up/Reference– Math– Misc

• Browse Category– Mnemonic Names

• Name hints at formula

– Hover over formula and read description

Loan Payment

• Given– Amount of the loan– A.P.R.– No. of Pay Periods

• Installment• Use built in formulas– Locate category– Browse for formula

• Financial Category• Browse Category• Look for a function

whose description makes sense

Loan Calculator

• Given– Amount of the loan– A.P.R.– No. of Pay Periods

• Installment• Use built in formulas– Locate category– Browse for formula

• PMT look good

Loan Calculator

• Place cursor• Select function

Loan Calculator• Place cursor in each

text box• Read description

Loan Calculator• Place cursor in each

text box• Read description

Loan Calculator

• Obvious– Nper: ow long– Pv: Amount of loan

• Calculation– Rate: Relation between

APR and no of periods per year, …/12

• Need to think– Fv: =0– Type: First payment

• Immediate = 1• One period later = 0

Loan Calculator

Loan Calculator

• Look at the result!• Why the “-” sign?• Flow of funds

+ is one direction (in this case, towards you)

- is the opposite direction (away from you)

Loan Calculator

• Change values and this becomes a– Car loan calculator– Home mortgage

calculator– Any loan with a fixed

rate, fixed time frame, and fixed payment

– E.g. car loan of 25K at 6% for 4 years.