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Monday, December 6, 2010
C LANGUAGE
CHARACTERISTICS OF HIGH LEVEL PROGRAMMING LANGUAGES.
1. Easy to Learn
High level languages are closer to human languages and far from machine language. These are English like languages and are easier to learn.
2. Easy Error Detection
High level languages are easy to read and modify. It makes it easy to find errors in programs written in high level languages.
3. Standardized Syntax
The Syntaxes of high level languages are standardized. These languages describe a well-defined way of writting programs. Different organizations work to determine standard syntax of these languages. An important organization is American National Standard Institute also known as ANSI.
4. Deep Hardware knowledge not Required
These language do not require dep knowledge of hardware or machine architecture. A programmer can write efficient programs without a deep knowledge of hardware. He can concentrate on solving the problem rather than concerning the human-machine interaction.
5. Machine Independence
High level languages provide machine independence. It means that the programs written in high level language can be executed on different types of computers. For example, a program written in C can be executed on Intel processors and Motorola processors.
6. More Programmers
Programming in low level languages is very difficult. But high level languages are easy to learn. It encourages more people to learn these languages. So many programmers of high level languages are available.
7. Shorter Programs
Programs written in high level languages are shorter than low level languages. One instruction of high level language is equivalent to many instructions of low level language.
1. Easy to Learn
High level languages are closer to human languages and far from machine language. These are English like languages and are easier to learn.
2. Easy Error Detection
High level languages are easy to read and modify. It makes it easy to find errors in programs written in high level languages.
3. Standardized Syntax
The Syntaxes of high level languages are standardized. These languages describe a well-defined way of writting programs. Different organizations work to determine standard syntax of these languages. An important organization is American National Standard Institute also known as ANSI.
4. Deep Hardware knowledge not Required
These language do not require dep knowledge of hardware or machine architecture. A programmer can write efficient programs without a deep knowledge of hardware. He can concentrate on solving the problem rather than concerning the human-machine interaction.
5. Machine Independence
High level languages provide machine independence. It means that the programs written in high level language can be executed on different types of computers. For example, a program written in C can be executed on Intel processors and Motorola processors.
6. More Programmers
Programming in low level languages is very difficult. But high level languages are easy to learn. It encourages more people to learn these languages. So many programmers of high level languages are available.
7. Shorter Programs
Programs written in high level languages are shorter than low level languages. One instruction of high level language is equivalent to many instructions of low level language.
RAM (First Year)
RAM
Primary memory (RAM) is short-term memory and can be used only while the computer is working. The moment it is switched off the contents of primary memory lost. We also know that the primary or main memory stored data as well as programs. When the computer is doing any job, the data that have to be process are kept in the primary memory. This data may come from an input device like a keyboard or secondary storage device like a disk. It is also known as read / write memory because we can write and red data from the main memory.
ROM
A read only memory (ROM) is one in which information is permanently stored. The information from the memory can only be read and it is not possible to write fresh information into it. This is the reason why it is called ROM. When the power supply is switched off, the information stored inside a ROM is not lost as it is in the case of a RAM chip. Such memories are also known as filed stores, permanent stores or dead stores.
Primary memory (RAM) is short-term memory and can be used only while the computer is working. The moment it is switched off the contents of primary memory lost. We also know that the primary or main memory stored data as well as programs. When the computer is doing any job, the data that have to be process are kept in the primary memory. This data may come from an input device like a keyboard or secondary storage device like a disk. It is also known as read / write memory because we can write and red data from the main memory.
ROM
A read only memory (ROM) is one in which information is permanently stored. The information from the memory can only be read and it is not possible to write fresh information into it. This is the reason why it is called ROM. When the power supply is switched off, the information stored inside a ROM is not lost as it is in the case of a RAM chip. Such memories are also known as filed stores, permanent stores or dead stores.
STUDNET OF ACADEMEY OF KNOWLEDGE
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| TALHA BHUTTA (Intermediate in Computer Science) |
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| ARSALAN QURESHI (Intermediate in Compute Science) |
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