Boolean Algebra
Boolean Algebra
George Boole 1854 Invented multi-valued discrete algebra
E. V. Huntington 1904 Postulates & Theorems
Claude E. Shannon 1938 Applied to relay circuits
TRUE (logic1) FALSE (logic 0)
Relays: Contacts closed Contacts open
MOS logic: High voltage (>4.8V) Low voltage (<0.2V)
Magnetic core: Magnetized up Magnetized down
Fluids: Fluid flowing Not flowing