Page 30 - CITS - Electronic Mechanic - TT - 2024
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ELECTRONICS MECHANIC - CITS
NOT GATE NAND GATE NOR GATE
Logic gates using transistor
Types of logic circuit
There are two types of logic circuit;
Sequential circuit
Combinational circuit
Difference between combinational & sequential circuit
Combinational Circuit Sequential Circuit
Output is dependent only on the input at the same Output is dependent on present input and past
instant of time output.
It does not contains memory elements. It contains memory element.
Its behaviour is described by these to output Its behavior is described by the set of next state
function. function and these to output function.
No feedback is available. Feedback is available.
It does not contains periodic clock signal. It contains clock signals.
Faster than sequential circuit. Slower than combinational circuit.
e.g. half adder, full adder,etc. e.g. Flipflop,counter,etc.
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CITS : E & H - Electronics Mechanic - Lesson 5 - 8
