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The most common type of non-volatile memory is the ROM device. This device is read only and the data is masked into the chip during manufacture. Variations of the ROM are one off programmable ones (PROM), erasable ones (EPROM) using UV light, electrical erasable ones (EEPROM). These devices allow the user to blow them with programs and re-program if incorrect. As engineers we will often use the EPROM version, the pinning details are shown below
The internal structure of the EPROM is similar the SRAM, but does not require a write pin; it employs light sensitive fuses to hold the data.
The actual device has a window in it, this enables the device to be cleaned using UV light, usually this window is covered up to prevent slow eraser by normal light.
chemistry behind them in brief
Home Banking: E-commerce is used in Home Banking as single call or single click. Online banking (Internet banking) is a term used for performing transactions, payments etc. ove
Address phase: A PCI bus transaction starts having an address phase. The initiator, after seeing that it has GNT# and the bus is inactive, drives the target address onto the
Which two properties are on every validation control? Two properties are:- a) Control to validate b) Error Message.
Words having 8-bits are to be stored into computer memory. The number of lines required for writing into memory are ? Ans. 8-bit words needed 8 bit data lines.
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Many medium-to-large information services units for modern business have reorganized to be decentralized with an emphasis on dynamic teams andempowerment. In modern business system
Indirect addressing A memory location is given that holds another memory location. This second memory location holds the real data. This mechanism solves problems caused by rea
What is the function of CU? The control unit works as the nerve center that coordinates all the computer operations. It issues timing signals that governs the data transfer.
What are the Structural Notations These notations comprise static elements of a model. They are considered as nouns of UML model that could be conceptual or physical. Their ele
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