42 Installation and maintenance of software for others in the field of design, fabrication and testing of semiconductors, integrated circuits and microelectronics; technical support services, namely troubleshooting of computer software problems; providing on-line technical and engineering information in the field of design, fabrication and testing of semiconductors, integrated circuits and microelectronics; engineering services and consultation services in the field of design, fabrication and testing of semiconductors, integrated circuits and microelectronics