Computer programming; Computer programming for others; Computer software consultation; Computer software design, computer programming, or maintenance of computer software; Computer software development; Computer systems analysis; Design and development of networks; Design of home pages, computer software and web sites; Design, development and implementation of software; Designing computer software for controlling self-service terminals; Development of computer programs recorded on data media (software) designed for use in construction and automated manufacturing (cad/cam); Development of software for secure network operations; Development, updating and maintenance of software and data bases; Duplication of computer programs; Installation of computer software; Maintenance of computer software; Periodic upgrading of computer software for others