Instructions and data use memory - Online practice 1

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Paper processor. Data memory: A=4, B=3. Instructions: LOAD A; ADD B; STORE C; LOAD 2 (literal); ADD C; OUTPUT. Accumulator starts 0; C initially 0. LOAD replaces the accumulator, ADD adds to it, STORE copies it into the named memory cell, OUTPUT displays it. Fetch retrieves an instruction; decode interprets it; execute performs it.