Computer language
- 2. “COMPUTERLANGUAGE” Smita Kundu Tanbir Ahmed Rabin Ashraful Haque Prohor Mazharul Islam
- 3. COMPUTER LANGUAGE What is computer language? Programming language is a formal language designed to communicate instructions to a computer.
- 4. TYPES OF LANGUAGE Low-level language A low-level programming language is a programming language that provides little or no abstraction from a computer's instruction set architecture High-level language High-level programming languages allow the specification of a problem solution in terms closer to those used by human beings. These languages were designed to make programming far easier, less error-prone and to remove the programmer from having to know the details of the internal structure of a particular computer. This language is used in third generation.
- 5. LOW-LEVEL LANGUAGE First generation Represent the very early, primitive computer languages that consisted entirely of 1's and 0's - the actual language that the computer understands (machine language). Second generation Represent a step up from the first generation languages. Allow for the use of symbolic names instead of just numbers. Second generation languages are known as assembly languages. Code written in an assembly language is converted into machine language (1GL).
- 6. CHARACTERSTICS Direct memory management Little-to-no abstraction from the hardware Register access Statements usually have an obvious correspondence with clock cycles Superb performance
- 7. ADVANTAGES & DISADVANTAGES Advantages • Computational Speed is very fast. • Directly understandable by computer. Disadvantages • Development of a program in machine language is very time consuming. • Error correction is tedious process.
- 8. HIGH-LEVEL LANGUAGE Third generation With the languages introduced by the third generation of computer programming, words and commands (instead of just symbols and numbers) were being used. These languages therefore, had syntax that was much easier to understand. Third generation languages are known as "high level languages" and include C, C++, Java, and Javascript, among others.
- 9. TYPES C++ VISUAL BASIC JAVA JAVASCRIPT
- 10. CHARACTERSTICS Interpreted Dynamic constructs (open classes, message-style methods, etc) Poor performance Concise code Flexible syntax (good for internal DSLs)
- 11. ADVANTAGES & DISADVANTAGES Advantages • These are simple to adopt due to their English like structure of statements. • They are easy to maintain and debug Disadvantages • The Program written in high level language are less efficient as they take more execution time. • The compiler also consumes some memory as it is required for the translation process.