How many machine cycle are neede to execute STA 1800?

The STA (Store Accumulator) instruction typically requires one machine cycle to execute, as it directly stores the value from the accumulator into the specified memory address. However, the total number of cycles may vary depending on the specific architecture and its memory access timing. In many systems, it could take one cycle for the instruction fetch and another for the memory write, totaling two cycles. Always refer to the specific architecture documentation for precise details.