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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.
What is polarisation? Explain. While a dielectric material is related an electric field the dipoles of the material find oriented in a certain direction under the effect of the
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Characteristics of magnetic field / flux lines: i. Forming a closing loop ii. Did not crossed against each other iii. Has a certain direction iv. Repel among one anot
Q. Explain working of Single-Phase Induction Motors? For reasons of simplicity and cost, a single-phase power supply is universally preferred for fractional-horsepower motors.
Control of generator output voltage levels
What is meant by microcontroller? A device which having the microprocessor with integrated peripherals like memory, serial ports, parallel ports, timer/counter, interrupt contr
Describe in brief how email system works Following is a simple description of how email system works: - Sender composes a message (and attaches a file if required) and send
what is frequency response plot?
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List the various addressing modes present in 8086? There are 12 addressing modes are present in 8086. They are, (a) Register and immediate addressing modes _ Register ad
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