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2. Electrolux Trilobite - Wikipedia

   en.wikipedia.org/wiki/Electrolux_Trilobite

   Trilobite had a weight of about 2 kg, a diameter of 35 cm, and a height of 13 cm. [8] It features a number of casters in addition to the drive wheels. The robot has a run time of about an hour between recharging. The robot uses a semi-structured approach to traversal of rooms. The robot comes with a recharging circuit that allows extended ...

3. Reel-to-reel audio tape recording - Wikipedia

   en.wikipedia.org/wiki/Reel-to-reel_audio_tape...

   A reel-to-reel tape recorder (Sony TC-630), typical of a 1970s audiophile device. Reel-to-reel audio tape recording, also called open-reel recording, is magnetic tape audio recording in which the recording tape is spooled between reels. To prepare for use, the supply reel (or feed reel) containing the tape is placed on a spindle or hub.

4. Vacuum-tube computer - Wikipedia

   en.wikipedia.org/wiki/Vacuum-tube_computer

   A vacuum-tube computer, now termed a first-generation computer, is a computer that uses vacuum tubes for logic circuitry. While the history of mechanical aids to computation goes back centuries, if not millennia, the history of vacuum tube computers is confined to the middle of the 20th century. Lee De Forest invented the triode in 1906.

5. Magnetic-tape data storage - Wikipedia

   en.wikipedia.org/wiki/Magnetic-tape_data_storage

   Magnetic tape was first used to record computer data in 1951 on the UNIVAC I. [8] The UNISERVO drive recording medium was a thin metal strip of 0.5-inch (12.7 mm) wide nickel-plated phosphor bronze. Recording density was 128 characters per inch (198 micrometres per character) on eight tracks at a linear speed of 100 in/s (2.54 m/s), yielding a ...

6. 9-track tape - Wikipedia

   en.wikipedia.org/wiki/9-track_tape

   9-track tape. 9-track tape is a format for magnetic-tape data storage, introduced with the IBM System/360 in 1964. The 1⁄2 inch (12.7 mm) wide magnetic tape media and reels have the same size as the earlier IBM 7-track format it replaced, but the new format has eight data tracks and one parity track for a total of nine parallel tracks. Data ...

7. Sebo - Wikipedia

   en.wikipedia.org/wiki/Sebo

   SEBO. SEBO is the brand name of vacuum cleaners made by Stein & Co GmbH, a company based in the German town of Velbert. They produce a range of upright and cylinder vacuum cleaners for domestic and commercial use. SEBO stands for SEmigewerbliche BOdenpflege, German for semi-commercial floor care.