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Similar to phase-change WORM technology (as used in CD-R) this uses an active layer with reversible properties allowing data to be overwritten in a single pass of the read/write head. This compares with the two-pass operation of conventional Magneto Optical devices.

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Topics: PD Drive Technology Optical Phase-change Dvd-ram Two-pass...

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PDP-10The PDP-10 was a computer manufactured by Digital Equipment Corporation (DEC) from the late 1960s on; the name stands for "Programmed Data Processor model 10". It was the machine that made time-sharing common; it looms large in hacker folklore because of PDP-20The most famous computer that never was. PDP-10 computers running the TOPS-10 operating system were labeled DECsystem-10 as a way of differentiating them from the PDP-11. Later on, those systems running TOPS-20 were labeled DECSYSTEM-20 (the block capital PDPPDP is an abbreviation for Programmed Data Processor the name of a series of computers, several of them ground-breaking and very influential, made by Digital Equipment Corporation. They were given that name because at the time of their introduction, compu PDP-1The PDP-1 P rogrammed D ata P rocessor 1 was the first computer in Digital Equipment's PDP series and was first produced in 1960. It is famous for being the computer most important in the creation of hacker culture, at MIT, BBN and elsewhere. The PDP-1 wa PDP-8The PDP-8 was the first successful commercial minicomputer, produced by Digital Equipment Corporation (DEC) in the 1960s. It was the first widely-sold computer in the DEC PDP series of computers (the PDP-5 was not originally intended to be a general-purpo PDP-11The PDP-11 was a 16-bit minicomputer sold by Digital Equipment Corp. in the 1970s and 1980s. The PDP-11 was a successor to DEC's PDP-8 computer in the PDP series of computers. It had several uniquely innovative features, and was easier to program because PDE PDP-7 PDF PDA PDS PDB PDP-6 PDC Pd