__f<br > f<br >PREFACE<br > Ilc BASIC Paint is exactly what the name implies: it is an exciting and<br >artistic introduction to BASIC while painting with a palette of 15 colors.<br > Tile senior author originally developed a Microcomputer (MC) Painting<br >Program as a teaching resource in art and design， but it also served well as an<br >introduction to BASIC. In tic BASIC Paint， the authors use the program as the<br >basis for a self-teaching， step-by-step approach to BASIC and its computer<br >graphics applications. This approach provides a foundation for understand-<br >ing other languages and computer graphics systems.<br > The minimum system needed for the MC Painting program includes<br >either an Apple~ lI + (48K)， an Apple IIe， or an Apple IIc computer; one disk<br >drive; a color television and modulator or a color video monitor; and a high-<br >qualib， joystick or paddles. We recommend that you also have a small printer.<br > Most of the book applies to each of the three Apples. We will discuss any<br >differences among them that could affect the topics we treat.<br > Chapter 1 introduces you to tile Apple-based MC Painting system and<br >explains how it facilitates learning about BASIC and computer graphics.<br > Chapters 2， 3， and 4 first tell you how to get started in the immediate mode，<br >which allows you to see immediately the Apples s response to what you type<br >on :the keyboard. We then provide you with simple BASIC programs for color<br >graphics (in the deferred mode) and， in progressively more complicated<br >programs， teach BASIC commands and functions and the fundamentals of<br >.good programming teehniques.<br > We primarily emphasize the parts of BASIC that are necessary for color<br >graphics. You will see enough of the other aspects of BASIC to allow you to<br >decide:whether to study BASIC more thoroughly elsewhere.<br > 0hapter 5 introduces larger color graphics programs that manipulate the<br >colors onlhe entire screen in a variety of different ways.<br > Chapters 6 and 7 arc a thorough study of tile mini-MC Painting program，<br >which is the central piece of the full MC Painting program. Again， the<br >emphasis is on the BASIC language and programming techniques.<br > Chapters 8 and 9 develop the full MC Painting program.<br > Cbapter 10 shows how to move from low-resolution graphics into high-<br >resolution graphics. We then explore the applications that can be done only in<br >HIREs graphics. This chapter also outlines the many ways you can enhance<br >your Apple system with new hardware or software， and it concludes with<br >remarks on animation programming.<br > Chapter 11 explores two educational applications of BASIC and color<br >graphics. You can try out a new and attractive computer graphics program to<br >aid mathematics teaching (STIX)， and you can learn about ENBASIC， TM Coln-<br >puter Teaching Corporation， an augmented BASIC designed for use in com-<br >puter-assisted instruction.<br > ix<br >