Comparison between analog ang digital design?

Hi all,
I'm new here... Could somebody brief me the different between analog and digital design? And what tools use for each of them?

Ummm...maybe it's just me but your question seems to be asking something so general that there isn't really an answer. Digital design involves designing circuits with digital components like logic gates, microprocessors, microcontrollers, RAM, FLASH, ROM, and everything else that processes information using digital signals. Analog is everything else (especially radio, audio and power supplies). But these circuits can incorporate digital components too. And digital circuits can still involve analog design when you really start to push the limits since the world is by nature analog (things like noise, ringing, EMI, RFI).

For tools...
oscilloscope - analog (but can be used for digital and be used to observe analog aspects of digital signals)
logic analyzer - digital only
function generator - analog
serial protocal analyzer - digital
frequency counter- digital or analog

Thanks dknguyen for the info...
How about the EDA tools use for these two type of design (digital and analog), are they the same?

THe tools to design the board level circuits are the same. The tools to design the low-level stuff is not. THe simulators are also not the same.