Here is my version:- Let us first start by defining “Computer Program” . Below is another example of machine language (non-binary), which prints the letter "A" 1000 times to the computer screen. Machine language example. These disadvantages areAssembly language programs are platform dependent. Each type of processor has its own instruction set and thus its own assembly language. Assembler programs are not costly; they are quite cheap.Advantages of assembly language program: The advantages of writing in assembly language are -Compared to machine language programs, programs in assembly language is less tiresome to work with and much less error prone.
Machine language is made up of instructions and data that are all binary numbers. But on the other hand, assembly language uses mnemonics or symbolic instructions in place of a sequence of 0s and 1s. Every program, video, image, and character of text is … A number of such examples are dealt with in the successive chapters. As low-level language we mean both machine language and assembly language.
Assembler program can detects errors and can produce required error messages accordingly.By a glance through the program codes and mnemonics, it is much easier to visualize the function of the program.Compared to high level language written program execution speed, program written in assembly language will be faster and almost same as the speed of execution of the same program written in machine level language.Nowadays, where very high-speed execution is required, there we can use assembly language programs. Machine level language uses only the binary language. As example, ADD B in one architecture means the content of accumulator will get added with register B.
But each assembly language instruction is translated into only one instruction in the machine language. High-level languages, such as Swift and C++ must be compiled into machine language before the code is run on a computer.. The codes are strings of 0s and 1s, or binary digits (“bits”), which are frequently converted both from and to hexadecimal (base 16) for human viewing and modification. The OR operation can be used for setting one or more bits. X86 and x64 processors have a different code of assembly language for performing the same tasks. For these reasons, Assembly language was developed as an alternative to Machine language. Object code can be saved and executed as and when desired by the user. It is easier to remember and write than machine language.It is a machine independent language. See instructions A machine language consists of the numeric codes for the operations that a particular computer can execute directly. Assembly language is coded differently for every type of processor. But in another architecture its meaning may differ. The first part is the operation code which tells the computer what function to perform and the second part is the operand which tells the computer where to find or store the data which is to be manipulated.
OR BL, 0FH ; This sets BL to 0011 1111 Example. In other words, assembly is a mnemonic statement that corresponds directly to processor-specific instructions. While writing the program, if a typographical error occurred due to oversight, then also it is much easier to debug the code and find the error and rectify it. To see this page as it is meant to appear, please enable your Javascript! Machine language is normally displayed in hexadecimal form so that it is a little bit easier to read. Thus writing a program in assembly language has advantages over writing the same in a machine language.Now let us discuss what are the disadvantages of writing programs in assembly language. Language types Machine and assembly languages. In other words, a program written in assembly language is also not portable.Assembly language program writer, must be highly conversant with the organization and architecture of the computer system being used.An assembler, which is a translator program, is needed for translating the assembly language program into machine code.
COBOL was the first high level language developed for business.Each statement in a high level language is a micro instruction which is translated into several machine language instructions.The compiler translates the source code into machine level language which is known as object code. Assembly Language uses short descriptive words (mnemonic) to represent each of the Machine Language instructions. However, in microcomputer systems, it is widely used. After machine level language, the next level of development in the evolution of computer languages was the Assembly Language. Machine level language uses only the binary language. It enables a user to write programs in a language which resembles English words and familiar mathematical symbols. It is the only language which a computer understands without using a translation program.A machine language instruction has two parts. Assembly is a symbolic language that is assembled into machine language by an assembler. It is easier to remember and write than machine language. This is because each architecture has got a dedicated set of mnemonics. For example, the assembly instruction compare a,b might be translated into COMPARE contents of bytes 32340-32350 with 54567-54577 (where A and B happen to be located in RAM at the moment).
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