And,or,not
The two categories for logic gates are basic logic gates and universal gates. Gates are identified by their function and universal gates are identified as NAND gate or NOR gate.
All digital electronic circuits are composed of logic gates. Without logic gates there would be no digital electronics.
It means that C is the inverse of A. Implementing the equation C = !A in basic logic gates requires the use of an inverter. An inverter can be made from a dedicated inverter gate, if available, or from a NAND gate with n inputs, where all n inputs are connected to A.
logic gates
Logic gates are the basic building blocks of digital circuits or systems. these digital circuits are used to implement several combinational and sequential operations. these operations include starage, timing, arithmetic, coding, communication etc. Hence, implementing the boolean algebra is not the only purpose where logic gates are used, hence, it is opt to call them as logic gates rather than boolean gates.
NAND gates are universal gates and can be used to construct any of the logic gates (AND, OR, NOT, NOR, XOR, XNOR). The easiest way to figure this out is to use basic Boolean Laws. For instance, to create a NOT gate (A'), tie one of the NAND gate's input to logic high: (A+1)' = A'. To create an AND gate (AxB), use two NANDs in series, with the second one configured as an inverter: (AxB) = ((AxB)')'
Nand and nor gates are called universal gates .they called so as since any logic function can be done with nand and nor gates
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limitations of logic gates
types of optical logic gates
universal gates are the ones from which we can design other gates also. for eg. NAND and NOR gates. they help in forming the uniformity in the circuits.