Hi,
U can connect Digital oscilloscopes in the same way as analog ones,when u r doing experiments and wish to view the waveforms.Digital oscilloscopes provide storage facility.U can store upto 10 waveforms or even more(depending upon the product).U can also connect the oscilloscope to a printer and take printouts for future reference.
Digital oscilloscopes display provide time, frequency, amplitude measurements etc. directly on the display but in analog oscilloscopes u have to measure these manually.Most of the digital one's also provide display info.in various languages.Lotz of other features are also available depending upon the manufacturer.
However, the cost of digital oscilloscopes will be much higher than anlaog ones obviously.Hence for u'r projects itz better if u purchase a analog oscilloscope.
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Regards
Bhanumurthy.