FIRST GENERATION ENIAC was the world first successful electronic computer which was develops by the two scientists namely J.P. Eckert and J. W. Mauchy. It was the beginning of first generation computer. The full form of ENIAC is “Electronic Numeric Integrated and Calculator” ENIAC was a very huge and big computer and its weight was 30 tones. It could store only limited or small amount of information. Initially in the first generation computer the concept of vacuum tubes was
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But human-based data collection comes at great expense. Here is a low-cost microcontroller based visitor counter that can be used to know the number of persons at a place. All the components required are readily available in the market and the circuit is easy to build .Two IR transmitter-receiver pairs are used at the passage: one pair comprising IR transmitter IR TX1 and receiver phototransistor T1 is installed at the entry point of the passage‚ while the other pair comprising IR transmitter IR
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Article and Business Evaluation Intel Corporation Robert Noyce and Gordon Moore Founded Intel in 1968. The two scientists had a vision for semiconductor memory products. In the year of 1971‚ the first microprocessor was shown to the world. Today Intel continues to grow not only in computer technology‚ but in the scientific areas of chemistry. Intel has reached out and opened doors to the world offering education‚ inspiration
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Cyrel Justine G. Lonzame VI Sta. Rita de Cascia Generations of Computers First Generation Computer During the period of 1940 to 1956 first generation of computers were developed. The first generation computers used vacuum tubesfor circuitry and magnetic drums for memory‚ and were often enormous‚ taking up entire rooms. The vacuum tube was developed by Lee DeForest. A vacuum tube is a device generally used to amplify
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limit of the sensor we use reed sensor for this purpose. Reed sensor is a magnetically [pic] For sensing the sun light we mount the photo sensor on the top of the solar seeker. Photo sensor sense the light and provide to the motor control circuit. If the light is sufficient then Photodetecter provide a signal to the microcontroller and microcontroller stop the motor at this position. [pic] In this project we use two LDR as a photo sensor. One LDR monitor the light and provide to
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system gives solution to that problem. This circuit described here activates only when the specified sequence of four digits is pressed. If a wrong key is touched‚ it will not unlock. The lock code is set by connecting nine SPST switches. The code lock circuit is built around two CD4013 dual-D flip-flop ICs. The clock pins of the four flip-flops are connected to that specified sequence of digits‚ which is the correct code sequence to unlock the system. The circuit also contains (555) timer IC to lock automatically
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555 timer ic The 555 Timer IC is an integrated circuit (chip) implementing a variety of timer and multivibrator applications. The IC was designed by Hans R. Camenzind in 1970 and brought to market in 1971 by Signetics (later acquired by Philips). The original name was the SE555 (metal can)/NE555 (plastic DIP) and the part was described as "The IC Time Machine".[1] It has been claimed that the 555 gets its name from the three 5 eke resistors used in typical early implementations
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An Investigation on Capacitance and RC circuit Hamdy Hamdy Abdel Moneim Abdou‚ Jaime Lorenzo C. Olivares‚ and Karol Giuseppe A. Jubilo National Institute of Physics‚ University of the Philippines‚ Diliman‚ Quezon City Abstract This experiment is designed to further the understanding of the relationship between voltage‚ charge‚ and capacitance of capacitors. This also explains how values of effective capacitance for series and parallel combinations of capacitors are
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Assignment # 01 History Of Computers Introduction To Computer Submitted by Irrum Fatima 2013-B.env-029 2nd Semester Environmental Sciences Submitted to Madiha Wahid Department of Environmental Sciences FJWU – Rawalpindi Computers Computers are the Electronic Device Have Storing Capabilities Have Processing Capabilities Give outputs against inputs Give instructions to carry out operations and then store in memories Computers made our lives easy and reliable. Now a day‚ computer becomes necessary
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their origins in analog computers where they were used to do mathematical operations in many linear‚ non-linear and frequencydependent circuits. Characteristics of a circuit using an op-amp are set by external components with little dependence on temperature changes or manufacturing variations in the op-amp itself‚ which makes op-amps popular building blocks for circuit design. A Signetics μa741 operational amplifier‚ one of the most successful op-amps. Op-amps are among the most widely used electronic
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