Chapter 1- Visual Basic Schneider 1 Chapter 1 An Introduction to Computers and Visual Basic
Chapter 1- Visual Basic Schneider 2 Outline and Objectives Introduction to Computers Using Windows Files and Folders An Introduction to Visual Basic
Chapter 1- Visual Basic Schneider 3 Parts of a Computer System: Hardware: Electronic Devices Software: Instructions and Computer Programs
Chapter 1- Visual Basic Schneider 4 Main components of Hardware: Input : Keyboard, Mouse System unit: Random Access Memory (RAM) Central Processing Unit (CPU) Output: Monitor, Printer Secondary Storage: Disk Drive
Chapter 1- Visual Basic Schneider 5 Random Access Memory (RAM) Stores program instructions and data needed for processing. Stores intermediate and final results of processing. Contents are erased when computer is turned off or reset (volatile).
Chapter 1- Visual Basic Schneider 6 Programming Languages: Machine Language High level Language
Chapter 1- Visual Basic Schneider 7 Machine Language The fundamental language of the computer’s processor, also called Low Level Language. All programs are converted into machine language before they can be executed.
Chapter 1- Visual Basic Schneider 8 High Level Language Computer (programming) languages that are easier to learn. Uses English like statements. Examples are C++, Visual Basic, and Java
Chapter 1- Visual Basic Schneider 9 Software: Instructions for the hardware. A collection of instructions is called a program.
Chapter 1- Visual Basic Schneider 10 Using Windows Basic techniques to use the mouse: Pointing: moving mouse until the pointer is above desired object on the screen Clicking: press and release the left mouse button once Dragging (drag and drop): hold object, move it, then release Double-Clicking: clicking the left mouse button twice in quick succession. Hovering: lingering mouse at particular place and waiting for a message or menu to appear
Chapter 1- Visual Basic Schneider 11 Key Terms in using Windows Title Bar Active window Dragging a window
Chapter 1- Visual Basic Schneider 12 Using Windows Reviewing Notepad to learn more about Windows applications Notepad is an item in the Accessories menu
Chapter 1- Visual Basic Schneider 13 Files & Folders: A disk can store thousands of files. To organize your files you have to store them in different folders (directories).
Chapter 1- Visual Basic Schneider 14 Key Terms in using Folders Root folder Path: A nested sequence of folders Example: \Temp\MyProjects\ File Specification: A drive letter, path, and filename Example: A:\Temp\MyProjects\Example.vbp
Chapter 1- Visual Basic Schneider 15 History of Visual Basic: BASIC stands for Beginner’s All-purpose Symbolic Instruction Code. BASIC was developed by John Kemeny and Thomas Kurtz in mid-1960s. Visual Basic was released in 1991 by the Microsoft Corporation.
Chapter 1- Visual Basic Schneider 16 Introduction to Visual Basic: A language used to create windows applications. Programs are developed with a Graphical User Interface or GUI. The instructions executed in the program are controlled by events.
Chapter 1- Visual Basic Schneider 17 Terminology used in Visual Basic: Form Control Object Properties Event
Chapter 1- Visual Basic Schneider 18 Steps to Design a Visual Basic Application Design the appearance of the window that the user sees. Determine the events that the controls on the window should recognize. Write the event procedures for those events.