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Q. Explain Read-only memory?
ROM is nonvolatile (because it maintains its contents even when its power is shut off) and is used to store data and programs that do not change during the operation of the system. The mask-programmed ROMs are read-only devices that are programmed for data storage during the manufacturing of the chip itself. These are generally less expensive devices for mass production. Character-font memory for laser printers is a good example. Programmable read-only memory (PROM) is a field-programmable memory that is fabricated by the manufacturer containing all 0s and is programmed irreversibly by the user by electrically changing appropriate 0s to 1s. PROMs are quite economical in small quantities. Erasable programmable read-only memory (EPROM) is nonvolatile and widely used in microprocessor systems for program storage. It can be erased by shining an ultraviolet light and reprogrammed if necessary. These are produced in lowtomoderate volumes.
Q. Consider two 1-C charges separated by 1min free space. Show that the force exerted on each is about one million tons.
Note transducers convert a physical quantity from one form to another. The case below illustrates a typical moving coil meter that converts a current into a mechanical a
Data Communication 1. Write short notes on: a. Sky wave propagation b. Line of sight propagation 2. List and describe the different types of errors that occur during dat
what is quality factor in term circuit analysis
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Calibration and Testing of Energy Meters and Meter Laboratory Energy meters form a vital instrument of revenue realization for the distribution utilities. Based on the meter r
In this Project you will simulate a Security Alarm system using the Quick flash board. A switch is placed as shown in the figure below. The main goal of this project is: Task 1:
A circular ring of magnetic material has a mean length of 1m and a cross sectional area of .001m^2.A sawcut of 5mm width is made in the ring . calculate the magnetizing current req
Static Electricity : This is produced when two substances are rubbed together; the substances may be solids, liquids, or gases. Typical sources of static electricity are: i) dr
What are the precautions to be taken before basic work on electrical installations? Ans: Before starting any electrical works on installations disconnect the power supply to
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