Computer hardware and parts therefor; [ semiconductors; lasers not for medical use; ] signal generators and analyzers; oscilloscopes; network and spectrum analyzers; electronic frequency counters [ atomic clocks in the nature of chronographs for use as specialized time recording apparatuses; chromatographs; accessories for chromatographs, namely, chromatography columns, septa, seals and syringes; mass spectrometers and parts therefor, namely, ionization sources for mass spectrometers; spectrophotometers; protein sequencers; instruments containing electrical, computer and chemical hardware for the analysis of DNA, RNA, cells and proteins; gene analysis equipment, namely DNA microarrays, DNA microarray scanners, DNA hybridization chambers, and associated software for analyzing genes; light emitting diodes, optical encoders, optical couplers, and diodes]