Assembly language

What Is an Assembly Language?

• Each personal computer has a microprocessor that manages the computer's arithmetical, logical, and control activities.

• Each family of processors has its own set of instructions for handling various operations such as getting input from keyboard, displaying information on screen and performing various other jobs. These set of instructions are called 'machine language instructions'.

• The programmer who uses an assembly language requires a translator to convert his or her assembly language program into machine language

• Rather than using simply 1s and 0s, assembly language uses abbreviations or mnemonic codes to replace the numbers: A for “Add”, CMP for “Compare”, MUL for “Multiply”, and so on.

• Rather than using simply 1s and 0s, assembly language uses abbreviations or mnemonic codes to replace the numbers: A for “Add”, CMP for “Compare”, MUL for “Multiply”, and so on.

Assembly language example

•  Typical examples of large assembly language programs from this time are IBM PC DOS operating systems, the Turbo Pascal compiler and early applications such as thespreadsheet program Lotus 1-2-3.

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