Radio Microwave engineer for 25 years, instructor in radio microwave engineering, computer technology 20 years. I have been involved in online learning for 20 years and the 2nd user of the Moodle program.
The 50th Anniversary Of The Optical Disc The 50th Anniversary of the Optical Disc.From the "Laser Disc" to "Blu-ray"History of the Optical DiscIn 1958, 50 years ago, David Paul Gregg invented the first optical disc using a transparent disc technology. The disc is 30 centimeters in diameter and uses an analog format and laser technology. It is therefore also called a "Laser Disc" He patented his design in 1961. A...... Similar Editorial : by James Walsh. | Source : Technology Transfer
