I have a project with atmega 328p IC and register shift 74595 which is as above
The atmega328 IC has a small port, so we had to use the IC 74595
The work process is such that by pressing the push of buttons A and B on seven segments, figures are shown.
Of course, we have 4 pushbuttons on my circuit, each of which goes to a subroutine by pressing it and exits it with one of them.
According to my circuit, can anyone tell me what method was used?
The circuit can not be changed in any way
And we just have to use those ports
Someone can help
Programming language c