2.3 Voltage Regulator LM7805 24 2.4 Relay 24 2.5 Magnetic Solenoid 25 2.6 Light Emitting Diode 26 2.7 Resistor 26 2.8 Crystal Oscillator 27 2.9 Transistor 28 2.10 Switch (button) 28 CHAPTER 3 29 HARDWARE DESIGN 29 MAIN CIRCUIT SCHEMATIC DESIGN 30 HARDWARE CONSTRUCTION PROCESS 31 CHAPTER 4 33 SOFTWARE DESIGN 33 INTRODUCTION 33 FLOWCHART 34 CODING WITH EXPLAINATION OF THE PROGRAM 35 EXPLAINATION OF THE PROGRAM 41 CHAPTER 5 42 TESTING AND DEBUGGING 42 Hardware
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. HAL‚ Inc.1 MMM Program Northwestern University December 1996 Revised March 2001 1. Background It is May 1992. HAL‚ Inc. is a major manufacturer of computers and computer components. In their Lubbock‚ TX plant they make printed circuit boards (PCB’s‚ also referred to as “panels”)‚ which are used by other plants in the company in a variety of computer products. The Lubbock plant‚ built in 1982‚ represents an $80 million investment and has approximately 450‚000 square feet of manufacturing
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ay from printed circuit boards (PCBs) that used copper containing thick- lm pastes on rigid substrates‚ which were patterned using a two-step masking and etching process. This process resulted in a surfeit of waste and was expensive due to laborintensive processing of the nal device. By contrast‚ conductive inks are now available that use existing printing technologies such as screen‚ gravure‚ exographic‚ offset‚ and inkjet to print conductive traces directly onto rigid and exible substrates relatively
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Scrolling LED Message Display Progress Report ECET 497 Eric Walb Keywords: LED Array LED Modules Microcontroller/Arduino I hereby submit this report and the accompanying project as my own work and give the ECET department permission to have this report made available to other students for reference. Abstract. In recent years‚ LED message displays have become a popular and creative way to display messages to any audience. In many cases animations are added to the message being
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number of accelerators or performance influencers that fueled his projections such as: 1) Resolved printed circuit board segment ( in-circuit) tester quality problems; 2) Introduction of new tester in mid-1986; 3) Substantial progress in VLSI test market with major program wih US Dept of Defense; 4) Large customer base‚ extensive software‚ broad line of testers‚ dominant share of printed circuit board test market‚ fair position in VLSI testing. More so‚ the industry was foreseen to grow stronger
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making process: modelling and simulation‚ computer-aided design‚ and computer-aided manufacture. Modelling and simulation Electronic circuits can be modelled in real life using a prototyping board - also known as a breadboard. However‚ this can be time consuming and uses real components‚ which can be damaged. Computerised simulation software can be used to test circuits without the need to physically build them. In addition‚ the computer simulation can be saved and edited. Simulation software can also
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CONTENTS 1) INTRODUCTION 2) CIRCUIT DIAGRAM 3) HOW IT WORKS 4) COMPONENETS DESCRIPTION. A. IC 555 TIMER B. BC 547 TRANSISTOR C. RESISTER D. CAPACITOR E. PRESET F. BUZZER G. PCB 5) SCOPE 1) INTRODUCTION: Generally when we are pumping liquids like water or may be any other liquid is we need a human to see whether the tank is filled or not or we will place a overflow pipe to know that the tank is fill or not
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Cisco Systems has a network of component suppliers‚ distributors‚ and contract manufacturers that are linked through Cisco’s extranet. When a customer orders a Cisco product at Cisco’s Web site‚ the order triggers contracts to manufacturers of printed circuit board assemblies when appropriate and alerts distributors and component suppliers. Cisco’s contract manufacturers are aware of the order because they can log on to Cisco’s extranet and link up with Cisco’s own manufacturing execution systems. What
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was conducted on July to October 2014 to provide a device that would automatically operate as a water sprinkler that is necessary for plant growth. The main objective of this project was to sustain a more constant source of water for plants. A circuit with a temperature detector was intentionally designed that recognizes any rise of soil temperature. The thermistor‚ temperature detector‚ is a special type of resistor whose resistance varies significantly with the temperature. As the temperature
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Industry Report‚ 2014-2017 Summary Electronic Chemicals refer to a variety of chemicals and materials used in electronic components‚ printed circuit boards‚ consumer electronics and other industrial products. This report focuses on analyzing photoresist & its special chemicals and capacitor chemicals as well as maleic anhydride derivatives used in printed circuit boards‚ flat panel displays and semiconductors. 1 Photoresist Photoresist is mainly used for fine graphics processing in PCB‚ LCD‚ semiconductor
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