In logisim$,$ I need to complete the logical circuit that is shown here. I just need to cplete the $4$th TTY$.$ In the fourth display you will display the text decrypted by the Hacker, using the Hacker Key Search and Hacker Decryption sub$-$systems. The hacker knows the encryption method but not the $7-$bit encryption key. I will need to use the counter that is included in the diagram. I will need step by step how to connect the counter and other elements that I could need to complete the project. $|$