Skip to main content

Introduce and compare Compiler, Interpreter and Assembler.

 .

Compiler 

Compiler is program that translate a high level language into machine language. A compiler makes translation once so that the source code does not have to translated such time the program is run. Source code translate into the machine code is called object code.

Compiler takes the complete high level program (source code) as input and translates it in terms of machine level instruction (object code).  Compiler checks the entire user written program known as source program, if error free, produces a complete program in machine language known as object program. The examples of common compilers are C, C++, Java, Pascal, FORTRAN etc.

Interpreter

Interpreter is a program that translate the high level language into machine language. Every time program is run the interpreter must translate each object code again. Interpreter reads each line of the programmer's instructions, determines what they mean, and sends the appropriate 1's and 0's to the computer.

The interpreter needs to evaluate the program letter by letter, then word by word, then line by line it's an incredibly slow process. Since translation is done on each line, error information is provided if any. The interpreter does not generate executable program. Therefore the distribution of the program is done by providing the source code. Example of Interpreter are ABASIC, GWBASIC, PERL etc.

Assembler

Assembler is a computer program which is used to translate program written in Assembly language into machine language. The translated program is called object program. It check each instruction for correctness and generate diagnostic massage if there mistake in syntax.

Assembler is basically the first interface that is able to communicate  humans with the machine. We need an Assembler to fill the gap between human and machine so that they can communicate with each other. Code written in assembly language is some sort of mnemonics(instructions) like ADD, MUL, MUX, SUB, DIV, MOV and so on. and the assembler is basically able to convert these mnemonics in Binary code. Example of Assembler are GAS, GNU etc.




Comments

Post a Comment

Popular posts from this blog

Introduction of Computer

.  A computer is an electronic device. It take input and store the data in memory and performing the function to produce accurate result in output device. It is used to type document, send email, play game, browse the web and entertainment.   Characteristics of computer  1 . High speed  Computer is very fast device. It is capable of performing calculation of very large amount of data. The computer has unit of speed in microsecond, nanosecond and even in picosecond. The computer is capable of performing millions of tasks per second. 2. Accuracy  The computer produces highly accurate and reliable result.  It does not make any kind of mistake in calculating. The calculation are 100% error free. The computers perform accurate 'n' number of times. 3. Storage capability A computer has much more storage capability. It can store large amount of data. It can store any type of data such as image, video, text document, audio and many more. 4. Diligence Diligence ...
1 comment
Read more

Introduce Linux, UNIX and Linux distribution.

 . Linux Linux is an open source operating system. The term Linux is actually referred to mean a kernel of Unix like operating system developed by a Finish software architect Linus Torvald. The name Linux is derived from Linus' Unix. Linux was originated from the inspiration of a small Unix like operating system MINIX by A.S Tanenbum. Linux is a complete multiuser, multiprocessing, secure and stable operating system which is also considered as UNIX clone. However no code from the proprietary from AT and T is included in Unix. It has flavor of Unix but is not Unix. UNIX  UNIX is a layered operating system. The innermost layer is the hardware that provides the service for the OS. The operating system, referred to in UNIX as the kernel, interacts directly with the hardware and provides the services to the user program. These user programs don't need to know anything about the hardware. They just need to know how to interact with the kernel and it's up to the kernel to provide ...
Post a Comment
Read more

Open System Interconnect (OSI) Reference Model

 . Open system interconnection (OSI) Model explains how packet travels through various layers to other devices on a network, even if the sender and destination have different types of network media. Layer 1(Physical layer):  Function  To activate, maintain, deactivate the physical connection.  To define voltage and data rates needed for transmission.  To convert the digital bits into electrical signals.  To decide weather the transmission the transmission is simplex, half or full duplex.  Physical layer doesn’t perform the detection and correction of errors. Layer 2 (Datalink layer):  Framing (stream of bits into manageable data units):  The datalink layer divides the stream of bits received from the network layer into frame manageable data units called frames.  Physical addressing (MAC Address):  Data link layer adds a header to header to the frame to define the sender and receiver of the frame. Flow Control (mechanism for overwhel...
Post a Comment
Read more