carbon nanotube processors
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Carbon Nanotube Processors.
Guided By,
Mrs. Suby Varghese.
Asst. Professor ,
ECE Department
T.K.M.I.T
Submitted By,
Syam Dayal
S7, EC B
Roll No: 38.
Objective
The main aim of implementing carbon nanotubes are :
• To introduce an efficient and a powerful processor made up of
carbon nanotubes, a semiconductor material that has the
potential to launch a new generation of electronic devices that
run faster, while using less energy, than those made from silicon
chips.
Introduction
• The topic deals with a design, architecture and working new
processor made up of carbon nanotubes which replaces silicon
from the existing processor.
The existing system is a silicon made processor which are widely used in
many electronic devices. Some of the disadvantages of silicon are:
1. High cost
2. Low thermal conductivity (149 W·m−1·K−1 )
3. Electrical conductivity low
4. Can produce 4 Ghz processor in a single core
5. Low energy-delay product
Existing system
What are carbon nanotubes?
• Carbon Nanotubes are hollow, cylindrical nanostructures composed
of single sheet of carbon atoms.
• Carbon Nanotubes (CNT) have exceptional electrical, physical and thermal properties.
• Carbon Nanotubes are stronger than steel and 200 times lighter than steel.
• Single walled Nanotubes are used in building Carbon Nanotube Processors.
Carbon nanotubes
Advantages of Carbon nanotubes:
1. Low cost
2. Very high thermal conductivity (3500 W·m−1·K−1 )
3. Very high electrical conductivity (higher than copper)
4. Can produce 10-15 Ghz processor in a single core
5. High energy delay product
4 bit processor
Gates are made up of Carbon nanotubes
Implemented using SUBNEG
Basic operating system can perform multitasking
Designed in MIPS architecture
Carbon nanotube processor
BLOCK DIAGRAMSchematic of a CNT processor
Stages of architecture
1. Instruction fetch: This stage supplies instruction memory with the address
to read.
2. Data fetch: This stage supplies the basic data needed for the instruction.
3. Arithmetic operations: This stage does the necessary arithmetic
operations for the instruction.
4. Write back: This stage writes back the output of the arithmetic operation to
the second argument location.
Block Diagram DescriptionSUBNEG and program implementation
Advantages of carbon nanotube processors.
• Free of energy leakage
• Highly energy efficient
• Can be implemented in present computer architectures like MIPS
• Enables multi-tasking
• Long life
• Use less power
• Smaller in size
Advantages
Future of carbon nanotube processor
• Continuous improvement of computational power at low energy
losses
• This basic instruction set can be extended to more powerful
processor
• Low metal usage helps us to built environment friendly processor
• Memory chips with Carbon Nanotubes which gives much more
dense memory
Disadvantages
Preparation of Carbon Nanotube are still very expensive
Metallic and semiconductor nanotubes cant be prepared with
high purity
It is very complex to build a processor using fully carbon
nanotubes
APPLICATIONSApplications
Carbon nanotube processors can be used for the implementation of:
Low power consuming electronic systems.
Small sized electronic gadgets.
Faster electronic devices.
Highly efficient computers and powerful computers.
Conclusion
• CNT’s have the potential to outperform silicon by improving the energy
delay product, a metric of energy efficiency by more than an order of
magnitude.
• Hence CNT’s are an exciting complement to existing semi-conductor
technologies.
CONCLUSION References
1. Carbon Nanotube Computer, Nature | Vol 501|September 2013.
2. Carbon nanotubes for high performance electronics. Proc. IEEE 96,
201-211| 2008.
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