For an embedded system with USB that requires recharging of Lithium batteries there are many considerations to be made before you can safely, accurately and quickly recharge the batteries.

I2C or SPI communication this is the question!
Serial Peripheral Interface Bus (SPI) was established by Motorola and Inter Integrated Circuit (I2C) was invented by Philips. So the main protocols to consider are: SPI protocol and I2C protocol.

ZigBee module with 32-Bit ARM Processor is ideal for remote sensing. California Eastern Laboratories is the only company that offers an IEEE 802.15.4 wireless module with an internal 32-Bit ARM processor. The module named FreeStar Pro is based on Freescale Semiconductor’s MC13224V radio/processor Platform in Package (PiP) chip. It offers lots of memory and I/O ports making it simple to design complex wireless nodes.

How to get started with FPGA DSP designs.
We live in a very business oriented society. As a result, new products are subjected to market driven specifications such as time to market and cost. Many of these products require computer systems that also have to take these specifications into account. For this reason embedded systems are far more applicable than pc type computing solutions. An embedded system is basically a fully customized computer system which is optimized for its specific function. It can usually be developed and produced at a lower cost than a traditional computer solution.

PCB (printed circuit board) layout optimization to avoid EMI (electromagnetic interference). A PCB layout should not only strive to prevent the emission of noise but also have good noise immunity from outside sources. One should have an understanding of potential sources of noise and have a strategy for dealing with these problems.

A SSD (solid state drive) is a data storage device and uses solid state memory to store persistent data.
Intel launched its new family of solid state drives claiming a significant performance advantage over its competitors. Solid state drives are small, lightweight and durable but they come with a high price tag and are typically slow. However, researchers in Korea have found a way of making these storage devices faster. The technique involves mixing two types of memory to increase the overall speed without also jacking up the price.