Hi$,$ I have some issues that I$\text{'}$m struggling to understand and I need help with. They are on the topic of digital systems. My problem is that when the question asks to design something, I cannot distinguish which piece of equipment I am using in the design. I hope you can explain to me how to use it$.$ These pieces, and if you could also give me an example of them. Full$/$half adder, multiplexer, Demultiplexer, decoder, encoder, registers, counters