Powerful, but simple and easy to use
The PicoScope 2105 scopes are handheld oscilloscope probes that hook up via a USB 1.0 or 2.0 port, and only need free PicoScope software to work on any laptop or desktop PC. They can display signals from 100mV to 20V, and equivalent time sampling enhances the sample rate for measuring continuous signals. They have a large 24k sample buffer and fast 100MS/s sampling. Drivers are available for situations such as C, VB, Delphi, LabView, and VEE. An entry-level version of the scope, the PicoScope 2104, is also available.
Saelig Co. Inc.