r. A processor's control unit is either a. microprogrammed/microcode c. hardwired/microprogrammed b. hard What is the main function of control unit? a. It decodes the opcode b It causes the processor to step through a series of micro-operation in proper e. It generates the control signals d. All of the above a. MAR b. MBR c. PC d. I1R 4. What instruction is being decoded in this Figure? a. Load b. Store c. Add d Subt Binary Hex Instruction Meaning 1Load Load cont ents of addross x into N 0001 0010 2 store store the contents of C at address x 0011 3 d dd the contents ot address x to c. 4 Subt x Subtract the contents of address X fros 0100 01015 0110 6Out put 0111 7 alt 1000 | 8 Skipcond |skip next instruction on oondition. 5 Imput Input a value from the keyboard into N put the value in C to the display Tersinate program Jump X |Load the value of X into PC