Memory and Instruction Execution

What is in the accumulator (ac) after the execution of the instruction at address 0x100?

a) 0x00
b) 0xFF
c) 0x100
d) 0x80

Answer:

Without specific instruction details and initial conditions, we cannot determine the state of the accumulator after the execution of the instruction at address 0x100.

To determine what is in the accumulator (AC) after the execution of the instruction at address 0x100, we would need the specific instruction set of the machine and the initial contents of the memory or the accumulator before the instruction is executed. As the question lacks this context, we cannot accurately determine what the state of the accumulator will be after the execution at address 0x100. If we knew the instruction, we could follow the machine's operations step by step to determine the result.

For example, if the instruction at address 0x100 was to load a specific value into the accumulator, then the accumulator would contain that value after execution. However, if the instruction was to perform an arithmetic operation using the value already in the accumulator, the result would depend on the initial value in the accumulator and the specifics of the operation performed.