9 Analogue to digital converters; apparatus for processing digital signals; apparatus for translation of ultra-high frequencies in the nature of frequency converters; sound and image recording apparatus; apparatus for data recording; digitizers; digital amplifiers; electrical devices that convert vibrations into sound for telecommunication devices; electric amplifiers; electronic digitizers; electronic amplifiers; multi-input controllers for computers; digital signal processing apparatus for voice signals; speech recognition devices, namely, microphones; imaging devices for scientific purposes; data collection devices, namely, apparatus for recording data; power amplifiers; amplifiers; signal amplifiers; preamplifiers; converters from analogue to digital form; audio converters; radio apparatus and instruments, namely, radios; distribution amplifiers for audio and video signals; signal cables for the transmission of sounds and images for telecommunications; electronic directional capacitive sensors that are touch sensitive; industrial automation controllers with embedded operating system software; integrated downloadable software for the automation of laboratories; signal converters, namely, converters that superimpose an Ethernet signal on an existing cable; microchips; microcontrollers; microprocessors; semiconductor chips; digital signal processors; printed circuits; electronic pressure sensors; sensors for speed determination; vibration sensors; electronic apparatus for testing compression, strength, hardness and tensile characteristics of industrial materials; electronic apparatus for testing the state of operability of electronic equipment; power transmission testing equipment for vehicles; resistor testing apparatus, namely, electronic apparatus for testing the state of operability of electric resistors; vehicle brake testing apparatus; brake testing apparatus for vehicle brakes; pressure measuring apparatus; precision measuring apparatus for measuring vibration; telemetry apparatus for measuring vibration, not for medical use; digital ph meters; dynamometers; instruments for measuring temperature, namely, thermometers not for medical purposes; electric current meters; flow meters; vibration meters; measuring instruments for measuring vibration, not for medical use; measure strips in the nature of thermosensitive temperature indicator; electric meters; speed gauges; accelerometers; thermocouples; temperature sensors; ammeters; instruments for measuring resistance; multifunction digital measuring devices for measuring vibration; electric controlling devices; laboratory oscilloscopes.