1. Topic:- Computer Programming Languages
Presented By:- Vahida Akhter
Assistant Professor
Computer Application
Govt. Degree College (Boys) Anantnag

2. Class:- B.C.A Ist Semester
Topic:- Computer Programming languages

3. Computer:- Is an electronic machine.
Computer Programming Language
Computer:- Is an electronic machine.
Program:- Program is a set of instructions or set of statements.
Language : -System of communication . Computer language are used to facilitate communication between computer and the user.

4. Programming Languages
Before learning any language ,it is important to know about the various types of languages and their features .
It is interesting to know what the basic requirements of the programs where and what difficulties they faced with the existing languages

5. Computer Programming languages
A programming language is an artificial language that can be used to control the behavior of a machine particularly a computer .
Programming Languages ,like human languages are defined through the use of Syntactic and Semantic rules, to determine structure and meaning respectively.

6. Programming language are used facilitate
communication about the task of organizing and manipulating information ,and to express algorithms precisely.
Through computer programming language we can create computer software .
Software :- Is a set of programs.
Software are of two types:-
Application software and system software.
Application software:- like Ms-word , excel, PowerPoint
System software:- Is operating system Like Ms-Dos , Unix, Linux ,Windows XP etc
Operating system:-Manages all the resources of the computer system Hardware and software.

7. Software Application Software System Software Operating System
Utility programs
Language Translation
WORD PROCESSING
SPREADSHEET
GRAPHICAL
GAMES
BUSSINESS SOFTWARE
UNIX M/S WINDOWS MAC O/S etc
FILE
MANAGEMENT,
I/O
MANAGEENT SYSTEM UTULITIES
ASSEMBLER
COMPILERS
INTERPRETERS

8. Computer Programming Language
Low Level Language
L.L.L
High Level Language
H.L.L
Translators
Machine Level Language ( M.L.L)
Assembly Language
Assembler
Compiler
Interpreter

9. Machine Language
Computer can understand only machine level language which are in binary digits (0,1).
Writing a program in machine level language is difficult task because it is not easy for programmers to write instructions in binary code.
Machine level language is error-prone and its maintenance is very difficult.
Machine languages are almost impossible for humans to use they consist entirely of numbers ,while easily understood by computers it is the lowest level computer language
It is very difficult to develop a program in machine language. Because the code is written binary numbers.

10. Assembly Language
The difficulties in faced in machine level language were reduced to some extent by using a modified form of machine level language called assembly language .
In assembly language instructions are given in English like words (Symbolic representation called Mnemonics ) such as ADD ,SUB, COMP,MOV etc .So it is easier to write and understand assembly programs.
e . g A add B = C
Assembly language programs must be translated into machine language.

11. The translator that is used for translating Assembly to Machine Level language is called “Assembler”.
In assembly language ,data is stored in computer registers and each computer has different set of registers.
Thus the assembly language program is also not portable .
Since the low level languages are related with the hardware.

12. High level language High level language are English like language .
So it is easy to write and understand the programs of high level languages.
These languages are machine independent.
While programming in a high level language , the programmes is not concerned with the low level details, and whole attention can be paid to the logic of the program.

13. For translating a H.L.L program into machine Level language, compiler or translator is used .
Every programming language has its own compiler or translator.
Example of H.L.L are FORTRAN,COBAL,BASIC,PASCAL ,C, C++,Java V.B etc.

14. Translators
We know that computers can understand only machine level language ,which is in binary form 1 or 0.
The code written in any high-level languages should be translated into machine level language and translators are used for this purpose.
These translators are just computer programs, which accepts a program written in High Level or Low level Language and produce an equivalent machine language program as output.

15. Types of Translators There are three types of Translators:-
Assembler .
Compiler.
Interpreter.

16. Assembler
Assembler is a translator (program) used for converting the code of low-level language (Assembly language) into machine level language

17. Compiler
Compiler is a translator used to convert the code of High Level Language into machine language .The high level language program is known as source program and the corresponding machine language program is known as object program.
A compiler searches all the errors of program and list them.
If the program is error free then it converts the code of program into machine code and the program can be executed separate commands

18. Interpreter
Interpreter and compiler performs the same task ,there is a difference in the working.
An interpreter are also used to convert H.L.L. into M.L Language.
An interpreter is a translator it checks the errors of program statement by statement (Line by Line). After checking one statement it converts that statement into machine code and then executes that statement .

19. This process continues until the last statement of program or an erroneous statement occurs.

20. THANK YOU