Idiom of the Day
tear one's hair out
to be anxious/frustrated/angry
The family members are tearing their hair out while they wait for news of their lost son.
Precautions while using Cathode Ray Oscilloscope
Digital storage oscilloscope
The digital storage oscilloscope, or DSO for short, is now the preferred type for most industrial applications. Instead of storage type cathode ray tubes, DSOs use digital memory, which can store data as long as required without degradation. A digital storage oscilloscope also allows complex processing of the signal by high speed digital signal processing circuits.