How are logic gates related to the output?
The focus will be on combina- tional logic(ornon-regenerative) circuits that have the property that at any point in time, the output of the circuit is related to its current input signals by some Boolean expression (assuming that the transients through the logic gates have settled). No intentional connec- tion between outputs and inputs is present.
Is there an intentional Connec-tion between outputs and inputs?
No intentional connec- tion between outputs and inputs is present. In another class of circuits, known as sequentialor regenerativecircuits —to be dis- cussed in a later chapter—, the output is not only a function of the current input data, but also of previous values of the input signals (Figure 6.1).
How is the output of a Circuit determined?
In another class of circuits, known as sequentialor regenerativecircuits —to be dis- cussed in a later chapter—, the output is not only a function of the current input data, but also of previous values of the input signals (Figure 6.1). This is accomplished by connect- ing ne or more outputso intentionally back tosome inputs.
Which is the Boolean expression for ex-NOR gate?
The Boolean expression in SOP form for EX-NOR gate is ̅̅ = i.e. output is 1 when both inputs are same. The expression in POS form can be derived from SOP
Why are NAND and NOR gates called universal gates?
NAND and NOR gates can be used to realize all possible combinational logic functions. That is why they are also called Universal gates. The output of a logic gate is ‘1’ when all its input are at logic 0.The gate is either NAND or an EX OR gate (c) an OR or an EX NOR gate NOR or an EX-NOR gate (d) an AND or an EX-OR gate
What kind of gates can be synthesised in CMOS?
In this chapter, the design of the inverter will be extended to address the synthesis of arbitrary digital gates such as NOR, NAND and XOR.