The Apple ][ A Landmark Innovation In Personal Computing Harmful Effect: People would begin to spend more time with computers and less time with people. Data Used: Uses almost any data that a user can think of. Security Concern: Potential for hackers to use for malice Bene it: Allowed for a more productive work with programs like Visicalc The Apple ][ made the Personal Computer For Everybody. The Apple ][ was ready to use almost out of the box, revolutionary at the time.