CPT stands for “Computer-To-Plate” can be an imaging technology utilized in modern printing processes. Within this technology, a picture produced in Desktop-Publishing software is output straight to a printing plate. It is the advanced technology which is being used.

This compares with the older technology, computer-to-film (CTF), where the computer file is output onto a photographic film. This film is then used to make a printing plate, in a similar manner to a contact proof in darkroom photography.

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The hard disk was invented on September 13, 1956 by IBM team led by Rey Johnson (considered as “father” of the disk drive). Earlier hard disk drives were large and cumbersome devices.