2. ● A program that performs tasks, such as
translating and interpreting, required for
processing a specified programming
language.
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● Provides facility to write, store and manage code.
● Provides other tools for programming like compiler,
debugger, linker etc.

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● Checks the code line by line to find syntax errors.
● If code is error free translate program into machine
language (object code).
● Object code is machine dependent.

5. ● Interpret one instruction at a time.
● It checks, translate and execute the instruction.
● Does not produce object code.
Input Output
High level Result of
language Interpreter program
program execution
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6. ● Translates the assembly language program into
machine code.
● It –
○ Reserves space for data
○ Replaces he mnemonic codes by machine code
○ Replaces symbolic addresses by numeric addresses
○ Determines machine representation of constants
Input Output
Assembly Machine
language Assembler language
program program
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7. ● Resolves the relative
location of
instructions and data
● Links libraries with the
object and put them
together as
executable.
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8. ● Inbuilt component of OS.
● Loads program into main memory and prepare
them for execution.
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9. ● Used to find logical errors
● Allows you to stop program at any step of
execution, check and change the values of different
variables.
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10. ● The repeated code (for e.g., UDF) of program is
controlled by macro processor.
● It referred each repeated set of code by a name, and
replace set of code when that name occurs in a
program.
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