Electrical Safety
Limit the use of high if high power device around water. Never use frayed or cut wires when plugging in a device should have an emergency cut off or "kill switch". Shut off and unplug al the devices when not in use or when you leave the room unattended.
Programmable Logic Controller Programming
Boolean algebra
Boolean algebra, as developed in 1854 by George Boole in his book An Investigation of the Laws of Thought, is a variant of ordinary elementary algebra differing in its values, operations, and laws. Instead of the usual algebra of numbers, Boolean algebra is the algebra of truth values 0 and 1, or equivalently of subsets of a given set.
