Digital computers; computer programs not being in the nature of printed matter and stationery or goods included in other classes; analog-to-digital converters; digital-to-analog converters; printed circuits; graphical display devices not being goods included in other classes; digital data communication devices including modulators and demodulators; controller apparatus for interfacing a digital computer with other devices, such other devices including digital computers, computer peripheral devices, communication devices, measuring devices, sensing devices, display devices and manual input devices, said controller apparatus not being goods ncluded in other classes; and parts thereof and fittings and accessories therefor not being goods included in other classes