The present invention relates to an apparatus and a method for realizing all-optical NOR logic device using the gain saturation characteristics of a semiconductor optical amplifier. According to the method, while a processor processes vertex data in units of batches, vertex data corresponding to a batch to be processed next is extracted and temporarily stored in a buffer independently of the processor. A hold-open lever opens the pistol after the last round in the magazine is fired. A vehicle remote climate controller cooperates with the receiver and to be coupled to the data communications bus extending within the electric vehicle for communication thereover to selectively operate the electrical heater responsive to the sensor and the remote transmitter. As a result, the number of iterations in a design cycle may be reduced. In the apparatus, an adder receives a digital baseband signal comprising a DC component, receives an estimated DC offset value, and calculates a difference between the digital baseband signal with the DC component and the estimated DC offset value.