Remote control via IR sensors

Starting my first robot, at age 73, called Orange Crush based on color paint I used.  It's based on McCombs Ardubot II but it's going to be a living proof of concept until it falls over or the batteries won't run it.  Right now I'm trying to use Radio Shack IR sensors as a remote control.  Since these sensors will only cover 90-120 degrees, I plan to mount them in a triangle or square so one will always be pointing at the remote control.

I know virtually nothing about electronics.  my problem is that I don't want to chew up pins monitering the sensors.  If any of them get a hit, I want to get a notification that I have a hit and enough information that I can query the rignt one to get the command it received.  

I could put an Adafruit Trinket out there to moniter them (I might just to play with master/slave computers) but there would seem to be an easier way to set a flag if the ORed results are not zero and in a byte transfer who set the flag to non-zero

Any help would be appreciated.

Thanks Ed

IR Comms

1. Read OddBot’s tutorial.
2. Get it working with 1 transmitter and 1 receiver about 1 meter apart.
3. Report results and ask for comments.