Comment For digital, a logic analyzer? (Score 1) 337
For CompSci, you'll probably be looking at digital signals more often than analog. Consider getting a logic analyzer instead.
I've worked with LeCroy LogicStudio 16. It's a logic analyzer that connects to your PC over USB. It does I2C, SPI, and UART triggering & decoding, and can capture 16 channels at 500 MHz. It costs just under $1000.
They've got the full application available on their website, it'll use a simulated device as a demo. http://www.lecroy.com/logicstudio/