ABSTRACT
While magnetic and semi-conductor based information storage devices have been in use since the middle 1950â„¢s, todayâ„¢s computers and volumes of information require increasingly more efficient and faster methods of storing data. Among the most promising of the new alternatives are photopolymer-based devices, holographic optical memory storage devices, and protein-based optical memory storage using rhodopsin , photosynthetic reaction centers. This paper focuses mainly on protein-based optical memory storage using the photosen ....etc

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Dynamic random-access memory (DRAM) is a type of random-access memory that stores each bit of data in a separate capacitor within an integrated circuit. The capacitor can be either charged or discharged .these two states are taken to represent the two values of a bit, conventionally called 0 and 1. Since capacitors leak charge, the information eventually fades unless the capacitor charge is refreshed periodically.The advantage of DRAM is its structural simplicity. only one transistor and a capacitor are required per bit, compared to six transis ....etc

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Definition
The Idea Of Direct Memory Access
By providing circuitry to generate addresses and memory control signals independently of the processor we see that it is possible to improve performance considerably. All that is necessary is to provide a signal to tell the processor to remove itself from the bus so there is no contention on the memory control, address, or data lines.

This is the entire concept behind direct memory access (DMA). To complete our picture, it is important to note that there are actually several ways that DMA can be ....etc

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pls send me glass computer memory for reduced cost of medical imaging ..abstact and ppt &FULL INFORMATION ....etc

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DYNAMIC MEMORY ACCESS MANAGEMENT FOR HIGH PERFORMANCE DSP APPLICATIONS USING HIGH-LEVEL SYNTHESIS
PRESENTED BY:NIRMAL JOSEPH
S7 ECE
College Of Engineering, Trivandrum
2007-11 batch



OUTLINE
INTRODUCTION.
TARGETTED ARCHITECTURE.
HIGH LEVEL SYNTHESIS.
DESIGN FLOW.
CONCLUSION.
REFERENCES.


DYNAMIC MEMORY ACCESS(DMA)
Also called indeterminate access sequence.
A part of data is not known before the execution of the application.
Memory acces ....etc

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It is a step towards a new breed of computer chips that couple memory with information processing. Such chips retain data when computer is turned off, eliminating the time-consuming process of booting up information from hard drive to processor. If we can make semiconductor based magnetic memories when we turn on computer it would be like a TV set-all information will be there with no need for reloading the operating system. All spintronic computers eliminate the need for parallel processing. Computing could be accelerated and customized with r ....etc

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Magnetic Random Access Memory

MRAM is a nonvolatile random access memory which uses magnetic storage and magnetoresistance (MR) to read the stored data. Magnetoresistive material is a resistor made of common ferromagnetic material which will change in resistance in the presence of a magnetic field. The magnetoresistive property gives a small but sufficient signal to distinguish between a 1 and 0. MRAM results from combining MR storage elements with standard semiconductor fabrication processes. ....etc

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A Phase Change Memory as a Secure Main Memory
A Seminar Report
by
Abdul Nassar A A
M105101
Department of Computer Science & Engineering
College of Engineering Trivandrum
Kerala - 695016
2010-11




Contents
1 Introduction 5
2 PCM Technology 6
2.1 History and background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Memory cell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Operation . . . . . . . . . . ....etc

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Random access memory (RAM) is the best known form of computer memory. RAM is considered random access because you can access any memory cell directly if you know the row and column that intersect at that cell.


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Mirror ....etc

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Name– study of diode matrix ROM.
Aim – to study the process of memory storage and memory address locations.
Apparatus – rectifier diodes, circuit board, DC power supply, resistors, connecting wires, soldering iron, cutter etc.
Circuit diagram –




Brief theory – a read only memory (ROM) can store thousands of binary numbers representing computer instructions and data. Some of the smaller ROMs are also used to implement t ....etc

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