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Schematics 201
Lecture Topic: Electrical Symbols
02-23-2011
Agenda for the week
Discuss Logic Diagrams including
Boolean Logic Gates.
 Start Assignment

Logic Diagrams

A logic diagram is a diagram that
represents the logic elements without
engineering details. The logic symbol is
the graphic representation of a logic
function.
Boolean Logic Gates. - Handout

Boolean logic is also used for circuit design in electrical
engineering; here 0 and 1 may represent the two
different states of one bit in a digital circuit, typically
high and low voltage. Circuits are described by
expressions containing variables, and two such
expressions are equal for all values of the variables if,
and only if, the corresponding circuits have the same
input-output behavior. Furthermore, every possible
input-output behavior can be modeled by a suitable
Boolean expression.
Boolean Logic

Basic logic gates such as AND, OR, and NOT
gates may be used alone, or in conjunction with
NAND, NOR, and XOR gates, to control digital
electronics and circuitry. Whether these gates are
wired in series or parallel controls the precedence
of the operations. Refer to Truth Table in
Handout for AND, OR, NOT, NAND, NOR, and
XOR.
Assignment #

Start assignment by making use of
blocks and dynamic blocks for each
symbol with the symbol description.
Read and follow instructions.