A memory cell having a transistor and a capacitor formed in a silicon substrate. The proximal end of the end piece is engaged with the distal end of the length of corrugated tubing and a length of polymeric tubing is utilized to initially retain the end piece and the length of corrugated tubing in engagement with one another. If an error occurs during the download or the microcode does not exist in the flash memory array, then the controller loads microcode and data into the program and data memory from the host computer. The invention is also for a process for removing combustion gases andor particulate matter from an air stream. When the detected pressure value is decreasing along the time axis, the sensor malfunction determination unit 207 determines that the pressure sensor 101 is not malfunctioning.