Busbud is quickly becoming the go to site for bus tickets around the world, as it's adding more inventory to its database. Currently there are many routes in Europe that you can search, compare and book bus tickets directly on the busbud site, otherwise you can view schedules and prices and get redirected to the bus companies website to purchase your ticket.

Very soon, there will be some new bus routes added for Spain and Turkey as well as some other countries around Europe and the world.

Also another thing to keep in mind is that there is no additional fees for booking on busbud, the price you will pay is the same as on the website of the bus company.

How to find inter-country buses in Europe?
I just recently started trying out on electronics engineering, and have built a OR gate, NOT gate and a AND gate using NPN transistors. When building the XOR gate, this is my design:



However, SW2 will not activate the LED due to the current at the base of Q4 (activated by SW2) activates Q5 to bypass the LED. Thus, the Q3 &amp; Q4's AND gate does not work. Is there any way I can get the between Q4 and Q5 to not flow unless both Q3 and Q4 have been activated?

Thanks in advance! I'm such a newbie.

P.S. The simulation lets the current flow from the positive side to the negative side.
