2 Areas of data processing 1. Business Data processing (BDP) . Business data processing is characterized by the need to establish‚ retain‚ and process files of data for producing useful information. Generally‚ it involves a large volume of input data‚ limited arithmetical operations‚ and a relatively large volume of output. For example‚ a large retail store must maintain a record for each customer who purchases on account‚ update the balance owned on each account‚ and a periodically present a
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Thomas Edison invented the light bulb. Vacuum tubes were first used in computers in 1946 until 1958. By then‚ vacuum tubes could not be made any smaller‚ so technology gave us transistors. Transistors were used in computers from 1959 to 1964. One transistor took the place of 40 vacuum tubes. When the limits of the transistor were reached‚ computer builders used integrated circuits from 1965 to 1970. In 1971‚ the microprocessor came
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Thinking about the future is the thing that takes a lot of our time and efforts being computer oriented. We have to imagine‚ try to figure out what the future will bring us. We are supposed to lead our generation in looking for new and life enhancing technologies to make man ’s life easier and more enjoyable. How will it look like? [pic]THIS IS THE MOST IMPORTANT QUESTION THAT CAME TO OUR MINDS. • Will we be able to talk to our computers in the future? • Will they respond freely
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transmitter circuit design 2. Figure 5.1: LIST OF TABLES 1. Table 1: List of components ABSTRACT This project explains the design and construction of a simple FM transmitter. The transmitter is made from identical discrete bipolar junction transistors. Continuous tuning is achieved with a variable capacitor. The designed tuning range was 88MHz to 108MHz. The transmitter can transmit audio signal on a 91.7MHz carrier over a distance of 300meters in open air. INTRODUCTION Frequency modulation
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semiconductors for the realization of invisible circuits. Oxide semiconductors are very interesting materials because they combine simultaneously high/low conductivity with high visual transparency. How it works? Transparent oxide semiconductor based transistors have recently been proposed using as active channel intrinsic zinc oxide (ZnO). The main advantage of using ZnO deals with the fact that it is possible to growth at/near room temperature high quality polycrystalline ZnO‚ which is a particular advantage
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How Stepper Motors Work Stepper motors consist of a permanent magnet rota ng sha ‚ called the rotor‚ and electromagnets on the sta onary por on that surrounds the motor‚ called the stator. Figure 1 illustrates one complete rota on of a stepper motor. At posi on 1‚ we can see that the rotor is beginning at the upper electromagnet‚ which is currently ac ve (has voltage applied to it). To move the rotor clockwise (CW)‚ the upper electromagnet is deac vated and the right electromagnet is ac vated‚ causing
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DESIGN AND CONSTRUCTION OF PROGRAMMABLE ELECTRIC COOKER BY AGBONTA DANIEL OJIEH ENG0409334 DEPARTMENT OF ELECTRICAL/ELECTRONICS AND COMPUTER ENGINEERING UNIVERSITY OF BENIN BENIN CITY OCTOBER‚ 2012 DESIGN AND CONSTRUCTION OF PROGRAMMABLE ELECTRIC COOKER BY AGBONTA DANIEL OJIEH ENG0409334 A PROJECT SUBMITTED IN THE PARTIAL FULFILLMENT OF THE REQUIREMENT FOR THE AWARD OF BACHELOR OF ENGINEERING (B.ENG) DEGREE IN DEPARTMENT OF ELECTRICAL/ELECTRONICS AND COMPUTER ENGINEERING
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computer program by performing the basic arithmetical‚ logical‚ and input/output operations of the system Introduction to CPU- * Central processing unit etched on silicon chip called microprocessor * Contain tens of millions of tiny transistors Components of the CPU- * Control unit * Moves data and instructions between main memory and registers * Arithmetic logic unit (ALU) * Performs computation and comparison operations * Set of registers
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Logic Kapalavayi Sai Ram‚ (2012EE10455)‚ Electrical Engineering Abstract—Dynamic logic circuits are of great use in modern digital VLSI circuits. Dynamic logic style is used in high performance circuit design because of its fast speed and less transistors requirement as compared to CMOS logic style. Domino logic circuits‚ one well known dynamic logic family‚ which‚ however‚ suffers from its inability to perform inversions. Various methods have been proposed to overcome this restriction. One such
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The History of the Computer Long before computers were invented‚ humans realized the need for them. The history of the Computer started about 2000 years ago with the abacus. It is a wooden rack holding two horizontal wires with beads strung on them and was one of the best calculating machines until the seventeenth century (PBS‚ 1). In 1835‚ English inventor‚ Charles Babbage came up with the idea of the Analytical Machine‚ a general purpose‚ fully programmed-controlled‚ automatic mechanical digital
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