A combinational circuit is composed of basic logic gates like NOT, AND, and OR gates. Logic gates perform operations using combinations of input signals to produce output signals. An OR gate outputs a 1 if any or both of its inputs are 1. An AND gate outputs a 1 only if both inputs are 1. A NOT gate, or inverter, outputs the opposite of its single input. Combinational circuits use these logic gates together to perform more complex logical operations on multiple inputs and produce a single output.
3. COMBINATIONAL CIRCUIT
A Combinational Circuit is a compound circuit
consisting of the basic logic gates such as NOT,
AND, OR.
Logic gates
All operations within a computer are carried out
by means of combinations of signals passing
through standard blokes built in circuits that
are known as logic gates.
4. OR GATE
The OR gate is an electronic circuit that generate
an out put signals of 1 if any of the input
signals is also 1, OR gate has an output of 1
when either A and or both are 1.OR gate
performs logical addition on its output.
and + is sign.
The symbolic diagram is.
R
OR
P
Q
Input Output
P Q R
1 1 1
1 0 1
0 1 1
0 0 0
(P V
Q)=R
5. And Gate
The and gate is logic circuit with two or more
input signals and one out put signal. If both
input signals are 1, the output signal is 1.
Otherwise the output signal is 0.it is shown as
symbolic represented. Sign is . and .
p
AND
Q
R
Input
P
Input
Q
Output
R
1 1 1
0 1 0
1 0 0
0 0 0
P Q = R
6. Not Gate Or (inverter)
An inverter is a gate with one input signal and
one out put signal. Its input is not same as
out put . The out put signal is always the
opposite or complement of the input. The
sign is
NOT
P R
~
Input P Output
R
1 0
0 1
~P = R