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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.
Transistor as an amplifier: Figure: Amplifier circuit, standard common-emitter configuration. The common-emitter amplifier is planned that is why a small change i
distingish between maximum and minimum modes of operations of 8086 with timing diagrames
Q. In plotting a hysteresis loop the following scales are used: 1 cm = 400 At / mand 1 cm=0.3 T. The area of the loop for a certain magnetic material is found to be 6.2 cm 2 . Calc
Q. Explain Digital control systems? Significant progress has been made in recent years in discrete-data and digital control systems because of the advancesmade in digital compu
Q. Design the low-pass filter shown in Figure (by determining L) to have a half-power frequency of 10 kHz.
Explain the operation of 8279. Explain the following terms: (i) N key Roll over. (ii) Key board debounce. (iii) FIFO RAM. Ans The 8279 microprocessor i
On state voltage drop It is the maximum instantaneous on state voltage measured under pulse conditions to avoid excessive dissipation at a particular junction tem
In this design, there are 24 line finders. If any of the 100 subscribers has to get access to any of 24 two-motion selectors, it is necessary that every line finder is capable of r
emf equation
State the advantages and disadvantages of alloying steel with silicon for use as magnetic materials in transformer and electric machines. Extensive utilize, is made of iron-sil
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