Oscilloscope

PC Oscilloscopes & Mixed Signal Oscilloscopes

An oscilloscope, previously called an oscillograph. There are two types oscilloscope normally used in lab. CRO (cathode-ray oscilloscope) or DSO (digital storage oscilloscope). But CRO are wipe out slowly by the existent of DSO. DSO have more feature and portability over CRO. 

Analog CRO

Oscilloscopes are used in the sciences, medicine, engineering, automotive and the telecommunications industry. General-purpose instruments are used for maintenance of electronic equipment and laboratory work. Special-purpose oscilloscopes may be used for such purposes as analyzing an automotive ignition system or to display the waveform of the heartbeat as an electrocardiogram.

Early oscilloscopes used cathode ray tubes (CRTs) as their display element (hence they were commonly referred to as CROs) and linear amplifiers for signal processing. Storage oscilloscopes used special storage CRTs to maintain a steady display of a single brief signal. CROs were later largely superseded by digital storage oscilloscopes (DSOs) with thin panel displays, fast analog-to-digital converters and digital signal processors. DSOs without integrated displays (sometimes known as digitisers) are available at lower cost and use a general-purpose digital computer to process and display waveforms.