Explain read-only memory, Electrical Engineering

Assignment Help:

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.


Related Discussions:- Explain read-only memory

Explain interrupt vector table, The interrupt vector table is always create...

The interrupt vector table is always created in the first 1K area of the memory. Justify the statement. While the CPU receives an interrupt type number start from the PIC, this

TRANSFORMER, what are the characteristics of transformer?

what are the characteristics of transformer?

Semiconductor in equilibrium, Semiconductor  in Equilibrium Equilib...

Semiconductor  in Equilibrium Equilibrium in semiconductors implies the following: (i) Steady state: ∂Z / ∂t = 0 In which Z is any physical quantity like charge, volt

Determine the supply current and the supply voltage, A single phase line ha...

A single phase line has an impedance of 8.4 + j11.2 ?. The line feeds a load consisting of a resistor and an inductor connected in parallel as shown in Figure 1. The load is absorb

Define the second group of 32 ascii character codes, Define the second grou...

Define the second group of 32 ASCII character codes? The second group of 32 ASCII character codes include various punctuation symbols, special characters, and the numeric digit

.voltmeter, circuit diagram,working and construction of voltmeter

circuit diagram,working and construction of voltmeter

Execute a pspice program to solve for the node voltages, Q. For the circuit...

Q. For the circuit given in Figure, develop and execute a PSpice program to solve for the node voltages.

What is ringer circuit in telephone hand set, Q. What is Ringer Circuit in ...

Q. What is Ringer Circuit in telephone hand set? Purpose of the ringer is to alert destination party of incoming calls. Audible tone from the ringer should be load enough to be

Beem, Ballistic galvanometer

Ballistic galvanometer

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd