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Q. Editor - Tools necessary for assembly language programming?
The editor is a program which allows the user to enter and modify as well as store a group of instructions or text under a file name. The editor programs can be categorized in 2 groups.
Line editors like EDIT in MS DOS work with manage one line at a time. Full screen editors like WordPad, Notepad etc. manage full screen or a paragraph at a time. To write text user should call the editor under control of operating system. Once the editor program is transferred from disk to system memory program control is transferred from OS to the editor program. The editor has its own command and user can modify and enter text by using those commands. Some editor programs like WordPerfect are very handy to use. At the completion of writing a program exit command of the editor program would save the program on disk under file name and will transfer the control to OS. If the source file is proposed to be a program in 8086 assembly language the user must follow syntax of assembly language and rules of assembler.
What is an I/O buffer? What is the advantage of buffering? Is buffering always effective? Justify your answer with help of an example. One type of I/O requirement arises from
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