SESSION:- 2015-2016

PRESENTATION ON

PLASTIC MEMORY

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SUBMITTED BY:-RAJENDRA DANGWAL(0608CS121042)HARSH GUPTA(0608CS121022)CSE 6th SEM

SUBMITTED TO:- MR. NEELESH DUBEYLECTURER ( CSE DEPT.)

Babulal Tarabai Institute of Research and Technology

CONTENTS

1. INTRODUCTION

2. CONSTRUCTION OF PLASTIC MEMORY

3. READ AND WRITE IN MEMORY

4. ADVANTAGES OF PLASTIC MEMORY

5. CONCLUSION

INTRODUCTION

1. Scientists at HP Labs and Princeton University are excited a new memory technology that could store more data and less cost than traditional silicon-based chips for mobile devices such as handheld computers, cell phones and MP3 players.

2. A conducting plastic has been used to create a new memory technology with the potential to store a megabit of data in a millimeter-square device - 10 times denser than current magnetic memories.

3.The device will also be cheap and fast, but cannot be rewritten, so would only be suitable for permanent storage.

CONSTRUCTION OF PLASTIC MEMORY

1. The device sandwiches a blob of a conducting polymer called PEDOT and a silicon diode between two perpendicular wires.

2. The passing of high current through PEDOT turns it into an insulator. The polymers two possible states, conductor or insulator, then form the one and zero necessary to store digital data.

3. "The beauty of the device is that it combines the best of silicon technology - diodes - with the capability to form a fuse, which does not exist in silicon“.

CONSTRUCTION OF PLASTIC MEMORY

However, turning the polymer INTO an insulator involves a permanent chemical change, meaning the memory can only be written to once.

READ AND WRITE

To store the memory, the researchers use the wires and the diode surrounding the PEDOT blob to run either a high or a low current through it. This either creates an insulator or leaves it as a conductor.

READ

To read the memory the current is run through the top wire and measure the current in the bottom wire. No current means the bit is a zero, and vice versa. The Hewlett-Packard team is now working on building a grid of intersecting wires. In this way, they can read and write multiple bits to one device. A grid system is commonly used in display screens to switch individual pixels.

WRITE With the introduction of high voltages, the PEDOT fuses would blow and represent the zeros while unblown fuses would represent the ones that make up computerized data and digital images.

ADVANTAGES OF PLASTIC MEMORY

1. Plastic memory is fast. Lab-built devices typically 2-10 MB/s read, 1-4 MB/s write.

2. It requires far fewer transistors, typically only 0.5M (million) for 1GB of storage compared to silicon's 1.5-6.5B (billion).

3. It costs about 5% as much to manufacture compared to silicon-based memory.

4. It has very low power consumption.

5. It maintains memory even when the power is turned off. Nothing new compared to flash, but worth mentioning.

CONCLUSION

The technology combines the characteristics of a CD and conventional memory chip.

It bears similarities to CD’s in that when data is written to it, it undergoes permanent physical change it does not use a laser to write the information.

Similarly to a memory chip, it plugs directly into an electronic circuit and has no memory parts.

The new memory technology promises to store more data at less cost than the expense to build chips used by popular consumer gadgets.

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