I was looking at this schematic,
http://www.pcbheaven.com/wikipages/images/frequencymeasuring_1261824864.png
and I noticed the two grounds. Where would I physically connect the ground? The battery negative is my guess but I'm not sure if I can have multiple wires coming out/going in to a single terminal. Rather be safe then sorry.
Also, why does the capacitor symbol have an upward curve on the bottom line?
Thank you.
http://www.pcbheaven.com/wikipages/images/frequencymeasuring_1261824864.png
and I noticed the two grounds. Where would I physically connect the ground? The battery negative is my guess but I'm not sure if I can have multiple wires coming out/going in to a single terminal. Rather be safe then sorry.
Also, why does the capacitor symbol have an upward curve on the bottom line?
Thank you.