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Magnetic-tape data storage is a system for storing digital information on magnetic tape using digital recording. Tape was an important medium for primary data storage in early computers, typically using large open reels of 7-track, later 9-track tape. Modern magnetic tape is most commonly packaged in cartridges and cassettes, such as the widely ...
Part of the IBM 7-track family of tape units, it was used on late 700, most 7000 and many 1400 series computers. Like its predecessor, the IBM 727 and many successors, the 729 used inch (13 mm) magnetic tape up to 2,400 feet (730 m) long wound on reels up to inches (270 mm) diameter. To allow rapid tape acceleration (and thus reduced seek ...
The 1301 connects to the computer via the IBM 7631 File Control. Different models of the 7631 allow the 1301 to be used with a 1410 or 7000 series computer, or shared between two such computers. The IBM 1301 Model 1 leased for $2,100 per month or could be purchased for $115,500. Prices for the Model 2 were $3,500 per month or $185,000 to purchase.
Perpendicular recording. Perpendicular recording (or perpendicular magnetic recording, PMR ), also known as conventional magnetic recording ( CMR ), is a technology for data recording on magnetic media, particularly hard disks. It was first proven advantageous in 1976 by Shun-ichi Iwasaki, then professor of the Tohoku University in Japan, and ...
IBM Magnetic Tape/Selectric Composer (MT/SC) in use Panel of MT/ST. The IBM MT/ST (Magnetic Tape/Selectric Typewriter, and known in Europe as MT72) was a model of the IBM Selectric typewriter, built into its own desk, integrated with magnetic tape recording and playback facilities, located in an attached enclosure, with controls and a bank of relays.
LabelMe. Online annotation tool to build image databases for computer vision research. Perl, JavaScript, HTML, CSS [4] MIT License. Encord. Encord is an automated annotation platform for AI-assisted image annotation, video annotation, and dataset management. Data Management: Compile your raw data into curated datasets, organize datasets into ...
Memory. 256 bytes of RAM (expandable to 640 bytes) + 512 bytes of ROM. Display. 8 or 9 red light-emitting diode (LED) seven segment display. Input. 20 key keyboard. Successor. ZX80. The MK14 ( Microcomputer Kit 14) was a computer kit sold by Science of Cambridge of the United Kingdom, first introduced in 1977 for £39.95.
June 21, 2024 at 8:14 PM. STRATFORD, Conn. (AP) — Two Lockheed Martin subsidiaries have agreed to pay the federal government $70 million for overcharging the Navy for aircraft parts, the U.S ...
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