Verilog Interview Question Part # 5

1) What is the difference between unary and logical operators?

Answer:
Unary operators have only one operand, where as logical operators are of two operands.

2) What is the difference between transport delay and inertial delay?

Answer:

Transport delay is the delay caused by the wires connecting the gates. Wire do delay the signal they carry, this is due to the wire resistance, capacitance, and inductance. Simply transport delay is propagation delay on a wire. In verilog transport delay is modeled as follows:
a <= #10 b; Inertial delay is the time taken by a gate to change its output. It is the gate delay. In verilog inertial delay is modeled as follows: assign #10 a = b;