Classes

Labs

	Assignments
	Schedule

Interact

Information is kept in electric form

old decimal machines - use different amounts of currents to represent digits 0 to 9

	some levels difficult to differentiate
	too many errors
	difficult to build

Binary Machines -use two levels only to represent two states - off (0) and on (1) (one bit)

	Relays on or off closed or open
	Transistors on or off 5 volts or 0 volts
	Binary Machines only understands on or off - there are no maybe's
	use a group of bits to represent more complex information

Note:

	Binary means two possible states, the computer knows on or off, magnetized one way or another. The computer actually does not know zeros and ones.
	Zeros and ones are just a convenient way to represent two states. They could be green and red for example.