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COMPUTER ORGANIZATION & ARCHITECTUREWhich of the following holds data and processing instructions temporarily until the CPU needs it? * (i) ROM * (ii) Control unit * (iii) Main memory * (iv) Coprocessor chip20192mCOMPUTER ORGANIZATION & ARCHITECTUREWhat is the first step in the instruction execution cycle? (i) Decode (ii) Fetch (iii) Execute (iv) Store20242mCOMPUTER ORGANIZATION & ARCHITECTURE(d) The instruction fetch phase ends with (i) placing the data from the address in MAR into MDR (ii) placing the address of the data into MAR (iii) completing the execution of the data and placing its storage address into MAR (iv) decoding the data in MDR and placing it in IR20222mMICROPROCESSORSWhich register usually stores the output generated by ALU in several arithmetic and logical operations? (i) Accumulator (ii) Special function register (iii) Timer register (iv) Stack pointer20202m