logic concepts
legend killer,
Concept of a bit is a duality called a compliment. As stated by dougy83 it consists of two opposite values. Up/down. wet/dry, day/night, on/off. These values can be given a Boolean value of one, (1), or zero, (0). If wet is (1) then dry is (0). If dry is (1) then wet is (0). All compliments work that way. A single bit has a base two value of "two to the zero power" which equals one, (1). The compliment of one (1) is zero, (0). Every bit has two applied opposite states. This is the basis of binary, base two, arithmetic.
The way bits are stored is that the output of a gate is raised, or lowered to a pre-designated voltage level to approximate the bit value.
Example; The “transistor, to transistor logic” family (TTL)
--------------------------- +5.0Vdc--------------------------------
LOGIC BIT VALUE ONE (1)
--------------------------- +2,4Vdc--------------------------------
Disallowed logic state
--------------------------- +0.8Vdc--------------------------------
LOGIC BIT VALUE ZERO (0)
--------------------------- +0.0Vdc--------------------------------
To truly understand the concept of flip-flops you need to first understand gate logic. AND, OR, NOT. Flip-flops are made from simple gate logic functions There are natural gates, and made-up gates, Flip-flops fall into the second category.