Chapter 1 - VB 2008 by Schneider1 Chapter 1 - An Introduction to Computers and Problem Solving 1.1 An Introduction to Computers 1.2 Windows, Folders, and.

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Presentation transcript:

Chapter 1 - VB 2008 by Schneider1 Chapter 1 - An Introduction to Computers and Problem Solving 1.1 An Introduction to Computers 1.2 Windows, Folders, and Files 1.3 Program Development Cycle 1.4 Programming Tools

Chapter 1 - VB 2008 by Schneider2 Visual Basic 2008 BASIC originally developed at Dartmouth in the early 1960s Visual Basic created by Microsoft in 1991 Visual Basic 2008 is similar to original Visual Basic, but more powerful

Chapter 1 - VB 2008 by Schneider3 XP versus Vista Windows XP Windows Vista

Chapter 1 - VB 2008 by Schneider4 Mouse Actions: Hover Drag and drop Click Right-click Double-Click

Chapter 1 - VB 2008 by Schneider5 1.3 Program Development Cycle Performing a Task on the Computer Program Planning

Chapter 1 - VB 2008 by Schneider6 Terminology tip A computer program may also be called: Project Application Solution

Chapter 1 - VB 2008 by Schneider7 Program Development Cycle Software refers to a collection of instructions for the computer The computer only knows how to do what the programmer tells it to do Therefore, the programmer has to know how to solve problems

Chapter 1 - VB 2008 by Schneider8 Performing a Task on the Computer Determine Output Identify Input Determine process necessary to turn given Input into desired Output

Chapter 1 - VB 2008 by Schneider9 Problem-solving: approach like algebra class How fast is a car traveling if it goes 50 miles in 2 hours? Output: a number giving the speed in miles per hour Input: the distance and time the car has traveled Process: speed = distance / time

Chapter 1 - VB 2008 by Schneider10 Pictorial representation of the problem solving process

Chapter 1 - VB 2008 by Schneider11 Program Planning A recipe is a good example of a plan Ingredients and amounts are determined by what you want to bake Ingredients are input The way you combine them is the processing What is baked is the output

Chapter 1 - VB 2008 by Schneider12 Program Planning Tips Always have a plan before trying to write a program The more complicated the problem, the more complex the plan must be Planning and testing before coding saves time coding

Chapter 1 - VB 2008 by Schneider13 Program development cycle 1. Analyze: Define the problem. 2. Design: Plan the solution to the problem. 3. Choose the interface: Select the objects (text boxes, buttons, etc.).

Chapter 1 - VB 2008 by Schneider14 Program development cycle continued 4. Code: Translate the algorithm into a programming language. 5. Test and debug: Locate and remove any errors in the program. 6. Complete the documentation: Organize all the materials that describe the program.