USB Ports
Summa's USB ports can be used to connect a QWERTY keyboard to the system.
FIGURE 11 - USB PORTS
User Buttons
Summa's User Buttons can be used in conjunction with Hydra2 general purpose inputs and outputs (GPIO).
See
"General Purpose Inputs and Outputs" on page 170
FIGURE 12 - USER BUTTONS
CALREC
Putting Sound in the Picture
for more information.
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