Step1/2Here iam uploading image sorry for uploading:innswer :-4r Bit Binory Decrementer:-It subtracts, binarig, value from the exsting binary value stored in the register or in the other words we cam simply say that it decreaser the enisting value stored in the registerFor any n - bit binary decrementer ' b ' rettor to the storage capacity ot the register which needs to be ckcremented by 1. so we require in number of toll adders. Thos in case of 4 - bit bipary decrementer we requive 4 tule ddder4- Bit Binary DecrementerExplanation:In the above Step question is explained Step2/2Working:It consist ... See the full answer