CHAPTER 12 ■ SOLDERLESS PROTOTYPING
It’s named the bus because it’s long with many points along the way, like a real bus line. Getting on at
one end can take you halfway across town, or you can get off at points in between.
There’s a good reason why there are two rows of distribution buses at both the top and bottom of the
board: Many parts in the circuit need nearby access to power. You can connect one of the bus rows to the
positive end of the battery and the other bus row to the negative end of the battery. Now all the parts have
convenient power access.
Depending on the length of a breadboard, the buses may be disconnected in the middle of the board. If
you want the buses to run the entire length of the board, just connect the middle of each row with wire
(see Figure 12-10).
Binding Posts
The fancier breadboards have binding posts (see Figure 12-11). They are not absolutely necessary, but
the posts do make it easy to quickly connect and disconnect a power source without wear and tear on a
breadboard hole or fragile wire.
Figure 12-10. Extending buses by connecting with wire
Figure 12-11. Three binding posts: Middle post has banana plug and wire