Any processor has an 'architecture' and an 'organization' of its own. Further it has its own set of instructions it can execute (known as 'Instruction Set'), there is some decode logic to interpret each unique instruction, an 'ALU' that actually carries out arithmetic and logical operations on data, and 'registers' to hold the processed and to-be processed data. This is not all a processor has, but the minimum it needs. The image gives a rough idea about a processor. The dotted line is boundary of processor and other connected stuff is its periphery. The image gives a rough idea about a processor. The dotted line is boundary of processor and other connected stuff is its periphery. The processor processes the data. But where is data? It comes from memory or input-output (I/O) devices. Devices are connected to processor through ports (ports manage the direction of data). Devices may be a keypad/keyboard, an UART, a display etc. The stream of instructions (called code/program) also comes from memory. The code may reside in same memory as of data or may be in separate memory. We'll explore this world of processor in subsequent posts. Connect with Digital Byte on facebook to get updates.
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