Page 93 - Make Your Own PCBs with EAGLE from Schematic Designs to Finished Boards

FIGURE 4-10 Connecting two nets.

This is offering us a choice of names for the new net that will be the merger of the two nets. It
does not matter what name you chose.

Buses

A typical example of where a bus is useful would be where a microcontroller is connected to an LCD
module using the HD44780 chip. This requires four data lines and three control lines. In the following
example, we will use a bus to connect the display’s data and control pins to the microcontroller.

Add the two components (search the libraries for “atmega32u2” and “hd44780”), rotate them, and
add a bus, all as shown in Figure 4-11.