1. Do you have the time you need to do work without interruption? 2. Do you have the time you want with your family each week? 3. Do you have the personal time you would like each day? 4. When you are interrupted at an activity‚ do you respond with anger? 5. When you are asked to do something unplanned‚ do you respond angrily? 6. When you are given an unexpectedly large project‚ do you get tense? 7. Do you respond in a positive manner when asked to do something for which you lack training?
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City University of Hong Kong Tat Chee Avenue‚ Hong Kong {zflai‚ scc}@cse.ust.hk wkchan@cs.cityu.edu.hk ABSTRACT NesC is a programming language for applications that run on top of networked sensor nodes. Such an application mainly uses an interrupt to trigger a sequence of operations‚ known as contexts‚ to perform its actions. However‚ a high degree of inter-context interleaving in an application can cause it to be error-prone. For instance‚ a context may mistakenly alter another context’s
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EE 201 : Digital Circuits and Microprocessors Dr. Amit Sethi Room 303‚ EEE Dept. 2529‚ amitsethi Objectives for this session Introduce the 8085 Microprocessor Introduction to 8085 programming model Introduction to 8085 instruction set All computers are based on the Turing Machine concept • In 1937‚ Alan Turing described this abstract idea of a computer • Turing Machines consist of: – A tape of infinite length with symbols printed in cells – A read-write head that can move along
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But – EMILY: (Interrupts John) That’s a great idea! (Runs back home) DEXTER: (walks in from bathroom‚ rubbing stomach) I shouldn’t have eaten that chilli… Anything to report? JOHN: Uh – N – no‚ the subject is simply sitting on the couch. DEXTER: (Looks through hole)
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LOGIC DESIGN ASSIGNMENT 1. A. B. To convert 85.85 from its decimal form to binary. 2|85 0.85 × 2 = (1). 70 2|42 r 1 0.70 × 2 = (1).40 2|21 r 0 0.40 × 2 = (0).80 2|10 r 1 0.80 × 2 = (1).60 2|5 r 0 0.85₁₀ = .1101₂ 2|2 r 1 2|1 r 0 =1010101₂ THEREFORE 85.85₁₀ = 1010101.1101₂ 2|0 r 1 To convert 85.85₁₀ to Octal 8|85 0.85 x 8 = (6).80 8|10 r 5 0.80 x 8 = (6).40 8|01 r 2
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Section 47. Interrupts (Part V) HIGHLIGHTS This section of the manual contains the following major topics: 47.1 47.2 47.3 47.4 47.5 47.6 47.7 47.8 47.9 Introduction .................................................................................................................. 47-2 Non-Maskable Traps.................................................................................................... 47-7 Interrupt Processing Timing .............................................................
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USING THE FREERTOS REAL TIME KERNEL A Practical Guide Richard Barry This page intentionally left blank © 2009 Richard Barry All text‚ source code and diagrams are the exclusive property of Richard Barry. Distribution or publication in any form is strictly prohibited without prior written authority from Richard Barry. FreeRTOS™‚ FreeRTOS.org™ and the FreeRTOS logo are trade marks of Richard Barry. Version 1.0.5 http://www.FreeRTOS.org CONTENTS CONTENTS I LIST OF FIGURES ...
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INPUT/OUTPUT ORGANIZATION • Accessing I/O Devices • I/O interface • Input/output mechanism Memory-mapped I/O y pp / Programmed I/O Interrupts Direct Memory Access • Buses Synchronous Bus Asynchronous Bus I/O in CO and O/S • • • Programmed I/O Interrupts DMA (Direct memory Access) A bus is a shared communication link‚ which uses one ‚ set of wires to connect multiple subsystems. The two major advantages of the bus organization are versatility and low cost. Accessing I/O Devices
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logical adress? 6.)what do you mean by addressing mode?what are the different addressing modes supported by 8086?explain each of them with suitable example? 7.)draw the timing waveform of mode 1 input control signals of 8255? 8.)what is software interrupt in 8085 microprocessor? 9.)explain the instruction SIM ANDRIM in 8085 microprocessor? 10.)write an assembly language programming in 8085 to interface a 8255 chip with port b address DDH to scan port a and send the data to port b .draw the logical
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specify what has occurred‚ just that something has. The signal the keyboard sends to the computer is a special kind of message called an interrupt request using an IRQ address. The keyboard controller sends an interrupt request to the system software when it receives a complete keystroke. For example‚ if you type the letter "r"‚ the controller immediately issues an interrupt request. (If you hold down the Shift Key before typing "R"‚ the controllers wait until the whole key combination has been entered
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