and include essentially all the atoms in a macroscopic particle‚ it is called macromolecular. Bonding in metallic substances is caused by the free movement of electrons. Materials Test tubes‚ Bunsen burner‚ distilled water‚ thermometer‚ portable ohmmeter‚ penny‚ rubber washer‚ pliers Procedure a. Melting Point A pea-size sample of a substance is taken. If the sample melts between 100° and 300° C‚ it will take more than gentle warming‚ but will melt before the test tube turns the flame of Bunsen
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password using 8051 microcontroller (AT89C51) Summary An electronic lock or digital lock is a device which has an electronic control assembly attached to it. They are provided with an access control system. This system allows the user to unlock the device with a password. The password is entered by making use of a keypad. The user can also set his password to ensure better protection. The major components include akeypad‚ LCD and the controller AT89C51 which belongs to the 8051 series of microcontrollers
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1- Familiarity and use of 8051 Micro controller Trainer. Exp No. 2- Instruction set for simple programs for data transfer‚ & 3 manipulation‚ arithmetic operations‚ branching operations‚ logical operations and testing condition of bit in a byte. Exp No. 4- Code conversion programs. Exp No. 5- Timer and counter programming using 8051 Exp No. 6- Serial mode operation of 8051 Exp No. 7- Interfacing DAC module using 8051 Exp No. 8- Interfacing Traffic signal control using 8051 Exp No. 9- Interfacing 7-segment
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Experiment 1 Introduction to basic lab equipment and components Introduction: To use an electronics lab‚ it is necessary to become familiar with some typical equipments and components‚ to reduce the accident and damaging the equipments. So the experiment will be accomplished with the right result and everything still in one peace. Objective: • To be familiar and understandings the operation of the basic components and equipments in electronics lab. • To know the color code of the
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References: and Resources‘). Availability of online resources and books is fast increasing. Here‚ 8051 > AVR = PIC Page 5 of 17 Line Follower Overview Block Diagram The robot uses IR sensors to sense the line‚ an array of 8 IR LEDs (Tx) and sensors (Rx)‚ facing the ground has been used in this setup. The output of the sensors is an analog signal which
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Thermal Expansion Experiment No. 2 *Santos‚ Patricia Mary O. Aquino‚ Junior Emil S. Bautista‚ Jennina Besana‚ Carra Sophiya Lime‚ Jerricson III-32 BSE General Science July 02‚ 2012 Abstract This experiment is done to determine the temperature coefficient of linear expansion of different materials. The different temperature coefficient is obtained through the use of an apparatus for measuring the linear expansion. The PASCO Thermal Expansion Apparatus was use to measure the thermal
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received data is then sent to the receiver PC serially. The RS-232 cable (DB-9 connector in this case) is used to coordinate the serial communication between the computer and the microcontroller. The RS232 standard is not TTL compatible‚ but the 8051 has two pins‚ that are used specifically for transferring (P3.1) and receiving data (P3.0) serially which are TTL compatible; therefore it requires a line driver such as the MAX232 chip to convert RS232 voltage levels to TTL levels‚ and vice versa
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interfacing it with 8051 microcontroller through 8255 peripheral. There are 8 select channels‚ IND to IN7 through which we can provide an analog input to ADC which we have obtained from an analog device. This output can be electrical signals of transducers measuring temperature‚ depth‚ pressure‚ etc. in the form of an output voltage. We see that there are 8 input channels for ADC and we can use 8 different inputs at a time. Now the output of this ADC is fed into the input of 8051 micro controller.
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44. Why do you never apply an ohmmeter to a live network? (Boylestad 98) Boylestad‚ Robert L. Introductory Circuit Analysis‚ VitalSource for DeVry University‚ 12th Edition. Pearson Learning Solutions‚ 11/2012. VitalBook file. Answer: It will be an inaccurate measurement because there is already a current flowing inside of it. An ohmmeter measures the current from the voltage that’s been being put out. So by applying an ohmmeter to a live network it will have an confusion between the live
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bills To avoid creeping in induction type meters To save power BLOCK DIAGRAM Energy meter Opto coupler Relay Load LCD 8051 microcontroller MC EEPROM Power supply Smart card Reader/writer HARDWARE COMPONENTS Digital energy meter (ADE7757) SLE4442 smart card reader/writer‚ MAX 232 EEPROM (SMART CARD) Relay and Power supply MCT2E Opto coupler LCD display 8051 microcontroller Digital energy meter EEPROM (smart card) • High accuracy ‚portability‚ • A microchip embedded in a plastic
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