Over the last two decades, computer and communication technologies have literally transformed the world we live in. Superscalar technology and instruction level parallelism has emerged as the key enabling technology in modern computers for higher performance, lower costs, and sustained productivity in real-life application. A CISC or a RISC scalar processor can be improved with a superscalar or vector architecture. Scalar processor is those executing one instruction per cycle. Only one

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... on is issued per cycle, and only one completion of instruction is expected from the pipeline per cycle per .In superscalar processor, multiple instructions are issued per cycle and multiple results are generated per cycle. Instruction level parallelism show maximum no of instruction executed simultaneously. Using ILP, we can achieve parallelism based on instruction. There are mainly two ways for exploiting ILP, dynamically and statically. This paper also contain information regarding future Microprocessor architecture.