ne of these displays. The Kindle 1 was introduced at a Press Conference hosted by Jeff Bozo of Amazon on 19 November 2007 as a product that 'kindles' (sets fire to) the imagination (and sells books via Amazon in the process). The Kindle 2 was launched in February 2009, moving from a 4-level to 16-level grey display and packed in to a substantially slimmer form factor. Initial market launches were in the USA. The device had a CDMA 1EV DO transceiver supplied by Qualcomm. Later versions for Europe and rest of the world are 3G enabled. The device can hold up to 3500 books; everything is free except the books of which there 650 000 to choose from, plus autodelivered newspapers, magazines and blogs. Some of the books are free as well. It takes about 60 seconds to download a book and your book and the collection is backed up remotely. Extracts can be shared with friends via an integrated Twitter or Face book function. The QWERTY keyboard can also be used to annotate text and there is an in-built dictionary and access to Wikipedia plus an ability to edit PDF documents. The differences between the Kindle 2 and the Kindle 1 include a redesigned key board. The ambition of the Kindle and other e books is to reinvent and enhance the reading experience and change the economics of book distribution by reducing the cost of delivery. Making Telecoms Work Table 5.3 Electrophoretic display Display Type Reflective electrophoretic Colours Black, white and grey-scale Contrast ratio 10 : 1 minimum White state 70 minimum Dark state 24 maximum Bit depth 4-bit grey, 16 levels Reflective 40.7% Viewing angle Near 180 degrees Image update time 120 milliseconds 2 to 12 inches (diagonal) Thickness 1.2 mm Resolution Better than 200 dpi Aspect ratio Typically 4 : 3 On 27 January 2011 Amazon.com Inc. announced a 36% rise in revenue for the final quarter of 2010 with revenue of $12.95 billion and a net income of $416 million or 91 cents per share compared to $384 million or 85 cents per share a year earlier. Analysts were disappointed and suggest