Make the following changes to the basic computer. 1. Add a register to the bus system CTR (count register) to be selected with SS,So 000 2. Replace the ISZ instruction with an instruction that loads a number into CTR. LDC AddressCTR +-M[Address] 3. Add a register reference instruction ICSZ: Increment CTR and skip next instruction if zero. Discuss the advantage of this change. Make the following changes to the basic computer. 1. Add a register to the bus system CTR (count register) to be selected with SS,So 000 2. Replace the ISZ instruction with an instruction that loads a number into CTR. LDC AddressCTR +-M[Address] 3. Add a register reference instruction ICSZ: Increment CTR and skip next instruction if zero. Discuss the advantage of this change