Karnaugh Maps, 2, 3 and 4 Variables

NOTES: Chapter III Karnaugh Maps, 2, 3 and 4 Variables    Rev C, November 2008  Topics:  - Karnaugh Maps can do Boolean Algebra simple. For example that terrible consensus rule  becomes easy. - Variable-entered maps. An easy way to make 5-variable maps seem like 4-variable ones, that works sometimes. - Don't care outputs Example: BCD digits Optional (in 2008. We will see in 2009) - Extended Maps (ones with XORs)