模拟示波器采用的是模拟电路（示波管，其基础是电子枪）电子枪向屏幕发射电子,发射的电子经聚焦形成电子束,并打到屏幕上。屏幕的内表面涂有荧光物质,这样电子束打中的点就会发出光来。

数字示波器则是数据采集，A/D转换，软件编程等一系列的技术制造出来的高性能示波器。数字示波器一般支持多级菜单，能提供给用户多种选择，多种数据分析功能，并且可以数据存储，实现对波形的保存和处理。

-Analog oscilloscope is used in the analog circuit (CRT, which is based on the electron gun) the electron emission of the electron gun to the screen, the electrons emitted by the focused electron beam is formed, and hit on the screen. The inner surface of the screen coated with a fluorescent substance, so that the electron beam hitting the point will emit light. The digital oscilloscope is a high-performance data acquisition, A/D conversion, software programming, and a series of technology created by the oscilloscope. Digital oscilloscope generally support multi-level menu, can provide a variety of options to users, a variety of data analysis functions and data storage, preservation and processing of waveform.