Compute! Issue 10 - March 1981. The Editor's Notes Software Copying Revisited - A Beginner's Guide to Compute! - A 6502 Version of the Winter Consumer Electronics Show: January '81 - The Beginner's Page - Computers and Society - Taking the Plunge-Machine Language Programming for Beginners - Computer Communications Experiments - Basics of Light Pen Operation - Getting the Most from your Pet Cassette Deck - The Mysterious and Unpredictable RND Part 3 - A CAI Program Called Linear Equation - Hex Conversion Using the 6502's Decimal Mode - Clearing the Apple II Low-Resolution Graphics Screen - Fun with Apple and PASCAL - Flipping your Disk - Designing Your Own Atari Character Sets - Atari Basic: A Line Renumbering Utility - Atari Memory Dump and Disassembler - Formatted Output for Atari Basic - Random Color Switching while Idle - A Small Operating System: OS65D the Kernel - A Six-Gun Shootout Game for the OSI C1P - Keyprint Revisited - Learning About Garbage Collection - PET Machine Language Graphics - Disk File Recovery Program David L - PET Exec Hello - A Flexible Input Subroutine - Universal Tape Append for PET/CBM - Nuts and Volts - Experimenting with the 6551 ACIA - A Vocal Hex Dump for the KIM-1 - Expanding KIM Style 6502 Single Board Computers Part 3 of 3 - Cassette I/O with AIM-65 BASIC - New Products Commodore Business Machines Announces Availability Of Emergency Relief Plan Application Program - New Products Chess And Checkers Programs For Atari Personal Computers - New Products Real Estate Analyzer - New Products Cimarron Announces An Attorney Package For Commodore's 8032 Business Computer - New Products Apartment Management Software Package - New Products 1981 Tax Preparer - New Products Super X-10 Mod From CMC For Home/Office Security Systems - New Products Scientific Plotter for Apple II - New Products PET Software Vendor Expands - New Products 32K Ram Expansion For Atari 400, 800 Announced - New Products Hayden Unveils Gameware Series - New Products Professional Software Packages - New Products Hellfire Warrior, Sequel To Temple Of Apshai, Now Available - New Products Space Wargame - Capute! Hooray for SYS (Correction) - Writing for COMPUTE!