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What is the latest technology for electronics and communication?

I have few suggestions to give:
Analog-Digital Hybrid Modulation
Quantum cryptography
FinFET Technology
4G Wireless Systems
Orthogonal Frequency Division Multiplexing
Magnetic Resonance Imaging
EC2 Technology

The most recent and booming technology is the GSM (global syatem for mobile communication).It is a very wide topic and can cover 3 topics in itself..The topics that it can cover are as follows:

1] How call originates and terminates from mobile to landline and vice versa.
2] 3G systems
3]Roaming technology.

and at the end u can ofcourse mention its drawbacks as iits security is a major area of concern...