williams-et-al-1983-apple-ii-computer-graphics

2 APPLE II COMPUTER GRAPHICSming. The user should be familiar with the following commands: GR,COLOR, PLOT, HLIN, VLIN, SCRN, HGR, HGR2, HCOLO R, HPLOT,DRAW, and XDRAW. If you are unfam iliar with APPLESOFT BASIC orthese commands, please review the APPLESOFT Reference Manual beforecontinuing.Before starting our journey into the world of graphics, it is prudent toarm ourselves with some relatively technical, often frustrating, but quiteessential material. We assume you have a rudimentary knowledge ofAPPLESOFT BASIC and your Apple 11 system. So, let us begin with adiscussion of the binary, decimal, and hexadecimal systems of numeration.The time has come, the walrus saidTo speak of many things.Of bits and bytes and peeks and pokes . ..