Fast, easy. and inexpensive graphics are finally available for personal computers with this new system from Radio Shack.
[author : Stan Miastkowski]
The VIC 20 has color, Sound, graphics, and expandability, and sells for $299.9S.
[author : Gregg Williams]
Appropriate circuts can very precisely control permanent-magnet DC motors.
[author : Steve Ciarcia]
Recent court decisions pave the way for more software protection again piracy.
[author : Christopher Kern]
An overview of patents, copyrights, and trade secrets, and how they relate to computer software and hardware protection.
[author : Stephen A Becker]
Construction of homebrew designs is greatly aided by the complete wire-wrapping systems from Vector Electronics.
[author : Adolph Mangieri]
Improve the response time of BASIC graphics displays on you TRS-80.
[author : Ronald Bobo and John Knoderer]
These routines are useful when you need arithmetic operations on signed 16-bit numbers.
[author : Bruce D Carbrey]
The use of interrupts in the 6502 microprocessor is demonstrated using an Apple II.
[author : George M White]
Interface an x.y plotter directly to an Apple II with a minimum of hardware.
[author : Richard C Hallgren]
The use of global and local variables can change how a program works.
[author : Rotert Morris]
Debug your machine-language programs for 6800-based systems using instruction mnemonics.
[author : A I Halsema]
Ten integrated circuits can provide all the features of a commercial disk controller at a fraction of the cost.
[author : James Nicholson and Roger Camp]
Keep track of all those scattered files with this organization system.
[author : Edward Heyman]
Gauss Jordon elimination and the Newton-Raphson method can be used to find the function curve that best fits a set of empirically determined data.
[author : Toan C Nguyen]
[author : Kevin Cohan]
[author : Gregg Williams]
[author : Bob Liddil]
[author : Robin Moore]
[author : Oliver Holt]
[author : Elizabeth Cooper and Yvan Kolya]
[author : Stanley D Robbins]
[author : Mark Dahmke]
Improve TRS-80 Dick Operation
Add an External Data Separatot
Faster BASIC br the Ohio Scientific
Using Page Two with Apple Pascal Turtle Graphics
Print for the C Function Library
Print Your Own Bar Codes
UPC Bar Codes With the Centronics 737
PAPERBYTE© Bar Codes with Integral Data Systems Printers
Favorite Benchmaks and Other Programs
Build a Noise-Based Random-Number Generator
Fast Fourier Comes Back
Principies of Interactive Computer Graphics 2nd Edition
Travels in Computerland, or Incompatibilities & interfaces
Did you know that the Vikings were notorious pirates? In Robert Tinney's striking cover painting, executed from an original design by Jonathan Graves, the floppy disk is the "sail" that powers the underhanded business of software piracy. Included are several articles on the legal aspects of protecting software from unscrupulous pirates: Chris Morgan's editorial, "How Can We Stop Software Piracy?" (page 6); Christopher Kern's "Washington Tackles the Software Problem" (page 128), and Stephen A Becker's "Legal Protection for Computer Hardware and Software" (page 140).
Other noteworthy articles in this issue include in-depth examinations of the Extended Color BASIC for the TRS-80 Color Computer, the new Commodore VIC microcomputer, and the Epson MX-70 and MX-80 printers. And this issue begins a new occasional feature on microcomputer video games called "BYTE's Arcade."