However‚ each of these eight pins also has an alternate function‚ as detailed in the table below. Like all electronic device to work‚ a external or clock source should be present. In the case of 8051 microcontroller‚ the clock is supplied by an external oscillator preferably 11.0592 MHz oscillator to induces the clock pulses. The out of the clock source is connected to
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Q 1. Draw the Pin diagram of 8051 micro-controller and give the functioning of following pins: (a) #PSEN (b) XTAL1 & XTAL2 (c) ALE (d) #EA Q 2. Draw the architecture of 8051 micro-controller .Also give the features of 8051 & description of registers (DPTR‚ PC‚ A‚ B). Q 3. Draw the PSW (Program Status Word) register of 8051 and describe all its bits .Also tell how register bank 3(RB3) can be selected. Q.4 Write PUSH instructions to push the contents of the registers on stack after the execution
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CS 375‚ Compilers: Class Notes Gordon S. Novak Jr. Department of Computer Sciences University of Texas at Austin novak@cs.utexas.edu http://www.cs.utexas.edu/users/novak Copyright c Gordon S. Novak Jr.1 A few slides reproduce figures from Aho‚ Lam‚ Sethi‚ and Ullman‚ Compilers: Principles‚ Techniques‚ and Tools‚ Addison-Wesley; these have footnote credits. 1 1 I wish to preach not the doctrine of ignoble ease‚ but the doctrine of the strenuous life. – Theodore Roosevelt Innovation requires
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Compiler-a program that translates an executable program in one language into an executable program in another language Interpreter-a program that reads an executable program and produces the results of running that program Why do we care to study compiler construction Compiler construction is a microcosm of computer science artificial intelligence greedy algorithms learning algorithms Algorithms graph algorithms union-find dynamic programming Theory DFAs for scanning parser generators lattice
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Chapter 1 INTRODUCTION At the time of learning languages like C‚ C++‚ Java etc. The programmers or users have to face the problems of installation or compilation. Other problem is that if the user wants to compile program on any other system they require again all processing to install and configuration problem. Security is one more problem of the user or programmer. Due to‚ viruses or some time improper handling of application the source file may get damaged or lost by system crash. To solve
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How to Create a Decision Tree Edited by Madhva_madhu‚ Leona 0 Article EditDiscuss A decision tree is a kind of flowchart -- a graphical representation of the process for making a decision or a series of decisions. Businesses use them to determine company policy‚ sometimes simply for choosing what policy is‚ other times as a published tool for their employees. Individuals can use decision trees to help them make difficult decisions by reducing them to a series of simpler‚ or less emotionally
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DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING 2007-2008‚ EVEN SEMESTER PRINCIPLES OF COMPILER DESIGN-CS1352 TWO-MARK QUESTIONS 1. What does translator mean? A translator is a program that takes a input program on one programming language (source language) and produces output in another language (object language or target language). 2. What are the phases of a compiler? • Lexical analysis phase or scanning phase • Syntax analysis phase • Intermediate code generation • Code optimization • Code generation
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Universität Dortmund Building a compiler (considering characteristics of embedded processors) Peter Marwedel University of Dortmund‚ Germany P. Marwedel‚ Univ. Dortmund/Informatik 12 + ICD/ES‚ 2006 Fri2 - 1 - Universität Dortmund Effort for building a compiler So far we assumed that all the optimizations can be added to some existing tool chain. Sometimes‚ a custom compiler is required‚ but: the effort for building a custom compiler is underestimated. It is not sufficient
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The Structure of a Compiler A compiler performs two major tasks: • • Analysis of the source program being compiled Synthesis of a target program Almost all modern compilers are syntax-directed: The compilation process is driven by the syntactic structure of the source program. A parser builds semantic structure out of tokens‚ the elementary symbols of programming language syntax. Recognition of syntactic structure is a major part of the analysis task. Semantic analysis examines the
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An Overview of a Compiler - Part 1 Y.N. Srikant Department of Computer Science Indian Institute of Science Bangalore 560 012 NPTEL Course on Compiler Design Y.N. Srikant Compiler Overview Outline of the Lecture 1 2 3 4 5 Compiler overview with block diagram Lexical analysis with LEX Parsing with YACC Semantic analysis with attribute grammars Intermediate code generation with syntax-directed translation Code optimization examples 6 Topics 5 and 6 will be covered in Part
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