Chapter 11 Working with Spreadsheets

Practical PC 6th Edition Chapter 11 Getting Started FAQs: What’s a spreadsheet? How do I create a worksheet? What if I don’t know the right formula? How do I know whether worksheet results are accurate? How do I create graphs? Practical PC 6th Edition Chapter 11

Practical PC 6th Edition Chapter 11 What’s a spreadsheet? A spreadsheet is a tool for working with numbers Arranged in a grid of columns and rows forming cells Cells hold labels, numbers, and formulas Spreadsheet software allows you to create electronic spreadsheets Easy to edit, print, save, and post on Web Often referred to as a worksheet Formulas are used to perform calculations You can use the worksheet to examine “what-if” scenarios Practical PC 6th Edition Chapter 11

Practical PC 6th Edition Chapter 11 What’s a spreadsheet? Practical PC 6th Edition Chapter 11

How do I create a worksheet? To create a worksheet: Begin by entering a title and labels Then enter the numbers, or values Finally, enter formulas Formulas specify how to calculate worksheet cells A cell reference is the column and row location of a cell, such as B2 You can format your worksheet to make it more attractive with different fonts, cell colors, and data alignment Practical PC 6th Edition Chapter 11

How do I create a worksheet? Practical PC 6th Edition Chapter 11

What if I don’t know the right formula? Spreadsheet software includes built-in functions Functions are predefined formulas Handy functions include AVERAGE and SUM To use a function, select it from the function list and select the cells that contain arguments An argument is a value or cell reference that a function uses as a basis for a calculation Practical PC 6th Edition Chapter 11

What if I don’t know the right formula? Practical PC 6th Edition Chapter 11

How do I know whether worksheet results are accurate? The worksheet author is responsible for its accuracy Test and verify the results using a handheld calculator Common errors: Typographical error Incorrect formula Order for the calculations in a formula is wrong Cell range specified is incorrect Wrong cells are specified as arguments in a function Practical PC 6th Edition Chapter 11

How do I know whether worksheet results are accurate? Practical PC 6th Edition Chapter 11

Practical PC 6th Edition Chapter 11 How do I create graphs? A graph is based on the data in a worksheet Graphs automatically reflect the change you make in the worksheet Data is contained in ranges, which are a series of cells You can create many types of graphs including bar, line, pie, column, scatter, area, doughnut, and high-low-close Creating a chart: Plan your chart by identifying your data and chart type Activate the Chart Wizard for step-by-step directions Use menu options to change the chart’s appearance Practical PC 6th Edition Chapter 11

Practical PC 6th Edition Chapter 11 How do I create graphs? Practical PC 6th Edition Chapter 11

Hardware: Display devices A computer display device is usually classified as an output device An LCD (liquid crystal display) produces on-screen images by manipulating light within a layer of liquid crystal cells Compact in size and lightweight LED (light emitting diode) technology is used commonly as backlighting for LCD panels Also can be used to form screen images Practical PC 6th Edition Chapter 11

Hardware: Display devices Practical PC 6th Edition Chapter 11

Hardware: Display devices A graphics card typically contains a graphics processing unit, which executes graphics commands Monitors connect to computers using VGA, DVI, or HDMI ports Practical PC 6th Edition Chapter 11

Hardware: Display devices Each dot of light on a computer screen is called a pixel The number of pixels is referred to as screen resolution Practical PC 6th Edition Chapter 11

Hardware: Display devices Ergonomics is the science of configuring jobs, equipment, and workplaces with regard to worker health and safety Check the following factors that contribute to ergonomic viewing: Brightness and contrast Viewing angle Response time Practical PC 6th Edition Chapter 11

Hardware: Display devices Practical PC 6th Edition Chapter 11

Who’s to blame for faulty software? What do you think? Do you usually read the EULA that’s supplied with your software? Should software publishers be held responsible for errors that result from errors, or bugs, in the software code? Should software publishers be held responsible if user errors result in business or personal losses? Practical PC 6th Edition Chapter 11