Analogue was the first and digital cellular the second. Some new technologies are more than a flash in the pan. Flash memory is a type of chip that doesn't forget when the power is turned off. It is an emerging technology in a standard format that is finding its way into voice recorders, digital cameras, printers, cell phones, toys and even hand-held scanners. Without flash memory all of these devices would forever have been tethered to batteries and power cords.
Batteries are also an emerging technology.
There have been vast improvements in rechargeable battery technology since their life was measured in hours rather than days. The three most desirable features of any battery are weight, energy density and maximum number of recharge cycles. Designers of electronic devices also concern themselves with the shape of batteries as devices often have to be designed around them. A new battery technology overcomes even that problem. Lithium-Polymer batteries are made of a malleable substance that can be moulded into just about any shape.