computer software design and maintenance for others; computer services, namely, designing and implementing network web pages for others; designing of amusement machines, namely, pachinko machines, slot machines, arcade game machines and other amusement machines; technical research in the field of amusement machines including pachinko machines, slot machines, arcade game machines and other amusement machines; computer programming; computer software designing and updating; services relating to licensing contracts based on portrait rights and using stage names for public entertainers, agencies on liaison services relating to copyrights, photography, planning designs and photography; preparation and maintenance of computer programs relating to copyrights; design and implementation of homepages on the Internet, and/or on computer networks for construction or management; technical research and analysis relating to computers and web pages; consultancy in the field of computer hardware, including amusement machines; consultancy in the field of construction of entertainment and recreational facilities; technology research; product research and development for others; research of technology projects; analyzing computer systems; rental of computers, namely, central processing units; programmed data carrying electronic circuits, magnetic disks, magnetic tapes, optical magnetic disks, CD-ROMs and peripheral equipment for computers