Stored Program Architecture in C - C Programming

 Stored Program Architecture of Computers

Stored Program Architecture

• By stored-program computer, we mean a machine in which the program and the data are stored in memory.
• Most of the high-level language programming will use this kind of computer implicitly.
• However, the program that is stored is not high-level language text. It would be necessary to constantly parse this text, which would slow down execution immensely.
• Instead, one of two other forms of storage is used.
• An abstract syntax representation of the program could be stored.
• The identifiers in this representation are pre-translated, and the structure is traversed dynamically as needed during execution.
• This is the approach used by an interpreter for the language.
• A second approach is to use a compiler for the language.
• The compiler translates the program into the very low-level language native to the machine, appropriately called machine language.
• The native machine language acts as a least-common-denominator language for the computer.
• A machine that had to understand, at a native level, many different languages would be prohibitively complex and slow.
• Machine language is rarely programmed directly, since that would involve manipulating bits, with which it is easy to err.
• Instead, an equivalent symbolic form known as assembly language is employed

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