Computer Language: Introduction, Types and Advantanges

Brief on Computer Languages

1. Computer Language
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For B.Sc. Community Science: 2020 Batch
By
Dr. Pavan Kumar ST
Asst. Prof (Statistics)

2. Types of Computer Language
1
•Machine
Language
2
•Assembly
Language
3
•High Level
Language
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3. Machine Language
•Translators- Not required
•Language is written as a strings of binary 1’s and 0’s.
•Two part-Format– Opcode and Operand
•Opcode-Function to perform?.
•Operand- To find or to store the data?

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4. Advantages and Disadvantages of ML
•Faster rate of execution of program.
•Translators- Not required.
•Machine Dependent
•Difficult to program
•Error Prone
•Difficult to modify.
Disadvantages of ML
Advantages of ML
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5. Assembly Language
•To overcome the limitations of Machine Language- Numeric instruction,
Storage Locations and Keep track of Storage Locations.
•Assembly Language uses- Mnemonic codes
•Example: Using ADD instead of 1110 (Binary) and 14 (Decimal).
•Additional instructions-Pseudo instructions- to instruct the system for program
assembly inside the computer memory.
•Translator - Assembler

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6. Assembly to Machine Language Program
Assembly language Program Assembler Machine Language Program
Source Program Object Program One to One Correspondence
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7. Advantages of Assembly Language
•Easier to understand and Use.
•Easier to locate errors and correct.
•No worry about address
•Easily locatable
•Efficiency of Machine language
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8. Limitations of Assembly Language
•Machine dependent
•Hardware knowledge required
•Machine level coding
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9. High Level Language
•Problem oriented language (POL)
•Third generation language
•Machine independent

COBOL
FORTRAN
BASIC
ALGOL
PROLOG
Some of the
High Level
Languages
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10. HLL to Machine Language Program
High level language Program Compiler Machine Language Program
Source Program Object Program One to Many Correspondence
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11. Advantages of HLL
•Machine Independence
•Easier to learn and use
•Fewer errors
•Lower program operation cost
•Better documentation
•Easier to maintain
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12. Disadvantages of HLL
•Lower Efficiency
•Less flexibility


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