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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.
Fetching a word from memory: CPU transfers the address of the needed information word to the memory address register (MAR). Address of the needed word is transferred to the pr
What are the steps involved in authentication? Steps in Authentication The control over the access of the resources in the repository is exercised in two steps namely Auth
Design and test the functions that are needed: a. Test Main in the Testing project add a new file main.c. b. Test Drivers in the Testing project add 2 new files, testDriver
Cache-Only Memory Access Model (COMA) As we have considered earlier, shared memory multiprocessor systems can use cache memories with each processor for decreasing the execution
Explain the number unobtainable tone in strowger telephony with waveforms and the timings. In the following figure illustrates the number unobtainable tone that is continuous
What do you mean by system calls? System calls give the interface among a process and the operating system. When a system call is executed, it is treated as by the hardware as
Write a subroutine in C for toggling the cursor using old directives. ; ; use small memory model for C - near code segment _DATA SEGMENT WORD 'DATA' CURVAL EQU [B
magnify a triangle a(0,0), b(1,1), c(5,2) twice its size hile keeping c as fix
Hyper-threading, officially known as Hyper-threading Technology (HTT), is Intel's trademark for their execution of the simultaneous multithreading technology on the Pentium 4 micro
What is problem statement The problem statement is crucial for any analysis. Problem statement is general description of the user's desires, and difficulties. The motive of pr
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