[[alternative]]A Microcomputer System Simulator

[[abstract]]In designing a microcomputer-controlled system, if we can use computer software to simulate the work of components and the control program, we can save time in wiring the prototype circuit and speed up the process. This study focuses on using software to simulate the communication between the microcomputer and interface. Our system integrates the hardware and software designing processes of the microcomputer-controlled system. We use computer software to simulate the work of an 8051 single chip microcomputer and other interface circuits in a microcomputer-controlled system. The system offers a total of 33 visual components, including RAM 2Kx 8, ROM 32Kx8, AND gate, OR gate, ground, LED and so on, as interface circuits. The system uses window graphic user interface, so that it connects components directly to design the circuit diagram. This circuit diagram can be saved for later use. This system provides the function of writing and executing assembly programs. During the debugging process, assembly codes are shown, and single step execution and break-point setting are allowed. Results of the circuit operation are visually presented, so that the hardware/software designers can see how the circuit works just like that of a real circuit.