S.Comp Essay

1038 words - 5 pages

8.0 PROGRAMMING 8.1.1 Definition Program : Programming Language:

8.1 Introduction to Programming

Prepared by : Pn. Marzita Ismail (SC Unit)

a series of instructions that directs a computer to perform tasks. A set of words, abbreviations, and symbol that enables a programmer to communicate instructions to a computer Eg: Java, C++, Fortran, Cobol, C 8.1.2 Types of Programming Language:

1) Low Level Programming Language
• • Why Low Level? : Because it is designed closer to the hardware Machine Language (1st Generation) Assembly Language (2nd Generation) Made up of instructions written in binary code (0 and 1). • Written in mnemonics, more English-like code; codes shorter than The ...view middle of the document...

1.3 Programming Language Paradigm Definition is an approach to solve programming problems. Paradigm Structured Programming Describe/what is/ • Program is divided into modules like function, subroutine and explain/characteristic procedure • Program execution involves changing the memory contents of the computer continuously. • tend to run much faster than other types of program. Examples

Object-oriented Programming

• •

consists of objects which communicate with each other by sending messages Objects are combination of both data and the function into a single unit Java C# Smalltalk
Conceptual simplicity Models computation better Increased productivity. Can have a steep learning curve, initially ( in the beginning) Doing Input / Output can be complicated

• • •
• • • • • •

C FORTRAN, COBOL
low memory utilization relatively efficient the most common form of programming in use today. difficulty of reasoning about programs difficulty of parallelization. relatively low level

• • •
• • • • •

Advantages

Disadvantages

8.1.4 Translator Definition/What is/Describe

Types Function

Translate a computer program written in one language (source code) into machine code (translator’s object code) which can be executed by a computer # Note: o Source code ? - Code written in the original form o Object code? - Code in executable form (machine code) Assembler Compiler Interpreter Translates assembly language into • Translates a high-level languages source • Translates a high-level language source machine code. code into machine code as a whole. code into machine code line by line • Scans the entire program first and translates it into machine code to be executed. Slow for debugging Execution time is less • • • Translates and execute the program line by line Good for fast debugging Execution time is more

Differences

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