state-machine

Hello, I am a bit hesistant to ask for help and im sorry, but I have a final project due soon and i have to build an attendance system but I'm struggling a bit and I'm cramped on time due to previous exams and projects, In it I can only use IC Chips and no microcontrollers It has 4 switches...

I am trying to design a state machine for the logging sensor which has the following scenario : Bootloader will send the signal whether a sd card is valid or invalid. If logging sensor receives valid signal, and there are error messages present, sensor will write the data to sd card and...