|Ken Novak's Weblog
Purpose of this blog: to retain annotated bookmarks for my future reference, and to offer others my filter technology and other news. Note that this blog is categorized. Use the category links to find items that match your interests.
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Sunday, September 08, 2002
Scientists demonstrate atomic-scale memory
: "The new memory was constructed on a silicon surface that automatically forms furrows within which rows of silicon atoms are aligned and rest like tennis balls in a gutter. By lifting out single silicon atoms with the tip of a scanning tunneling microscope, the Wisconsin team created gaps that represent the 0s of data storage while atoms left in place represent the 1s. Like conventional memory, the atomic-scale device can be initialized, formatted, written and read at room temperature. .. It provides a storage density a million times greater than a CD-ROM. .. [Its] memory density is comparable to the way nature stores data in DNA molecules. The Wisconsin atomic-scale silicon memory uses 20 atoms to store one bit of information, including the space around the single atom bits. DNA uses 32 atoms to store information in one half of the chemical base pair that is the fundamental unit that makes up genetic information. " 6:22:37 AM
MultiChoice is a company headquartered in Johannesburg South Africa with 690 mployees, serving Africa by satellite with TV and interactive data. They have "600,000 digital subscribers in South Africa, and more than a million subscribers across 50 African and Indian Ocean countries. Their Satellite reach includes PAS 7 for Ku band coverage of southern Africa and PAS 10 for C band coverage of sub-Saharan Africa. Additionally, MultiChoice recently invested $10M to roll out a Ku band service on the back of the Eutalsat W4 satellite whose smaller satellite dish requirement will mean more customers should be buying satellite television technology and services. MultiChoice originally developed, then spun-off, specialized B2B services used by Ford to update their dealerships in the bush with marketing and business documents regardless of location. ..The SHOMA Foundation, a Multi-Choice subsidiary, providing teacher training to educators in remote areas through the use of satellite technology." 6:16:55 AM
Al Hammond, Senior Scientist and CIO of World Resources Institute, is an expert on models for success using ICT and enterprise in development. Links:
pumps have been designed in Palo Alto and deployed in large numbers in Kenya. Wired profiled Approtec
. They work in some other basic technolgies
as well. They don't do IT for development, but they do many things right in appropriate technology. 5:47:03 AM