Basic Electrical and Electronics Engineering: Unit IV: Digital Electronics
Universal Gate
Circuit diagram, Symbol, Truth Table
The NAND and NOR gates are known as universal gates, since any logical function can be implemented using NAND (or) NOR gates.
UNIVERSAL GATE
The NAND and NOR gates are known as universal gates, since any logical function can be implemented using NAND (or) NOR gates.
NAND Gates:
The NAND gate can be constructed all the basic gates AND, OR and NOT.
NAND Gate as AND:
An AND gate function can be generated using only NAND gates. It is generated by simply inverting output of NAND gate AB = AB.
NAND gate as OR function:
The OR function is generated using NAND only.
NAND Gate as NOT Function
NAND gate both inputs are connected together and create NOT function.
NOR Gate:
Similar to NAND gate, the NOR gate is also a universal gate, since it can be used to form the all basic gates AND, OR and NOT gates.
NOR Gate as AND Gate Function
AND function is generated using only NOR gates
The above equation is implemented using only NOR gate, it is shown in fig.
The truth table of above function shown in table 4.13
NOR Gate Function as OR Gate
An OR gate can be generated using NOR gate. It can be formed by investing the output of NOR gate i.e ppppppppppppppppppA+B = A+B. The fig shows the NOR gate as function of OR.
NOR Gate Function as NOT Gate
An invester can be made connecting all inputs to single common input. It is shown in figure 4.16.
Basic Electrical and Electronics Engineering: Unit IV: Digital Electronics : Tag: : Circuit diagram, Symbol, Truth Table - Universal Gate
Basic Electrical and Electronics Engineering: Unit IV: Digital Electronics
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