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  2. Dust-Off - Wikipedia

    en.wikipedia.org/wiki/Dust-Off

    Dust-Off. Dust-Off is a brand of dust cleaner (refrigerant-based propellant cleaner, which is not compressed air and incorrectly called "canned air"). The product usually contains difluoroethane; although some use tetrafluoroethane and tetrafluoropropene as a propellant. It is used to blow particles and dust from computer, keyboards ...

  3. Screen protector - Wikipedia

    en.wikipedia.org/wiki/Screen_protector

    The first screen protector was designed and patented by Herbert Schlegel in 1968 for use on television screens. [1]In 1990s, the CRT screen protectors were used on CRT monitors for anti-glare and anti-radiation purposes.

  4. List of Microsoft Surface accessories - Wikipedia

    en.wikipedia.org/wiki/List_of_Microsoft_Surface...

    The Surface Pro 3 Type Cover features a second magnetized strip that can be rested against the screen to prop the keyboard up at an angle. The Surface Pro 3 Type Cover has a touchpad with glass beads replacing the felt-like material used in previous generations. When the Surface 3 was announced, a smaller version, the Surface 3 Type Cover was ...

  5. Computer monitor - Wikipedia

    en.wikipedia.org/wiki/Computer_monitor

    A flat-panel display (FPD) computer monitor A cathode-ray tube (CRT) computer monitor A computer monitor is an output device that displays information in pictorial or textual form. A discrete monitor comprises a visual display , support electronics, power supply, housing , electrical connectors , and external user controls.

  6. Gas duster - Wikipedia

    en.wikipedia.org/wiki/Gas_duster

    A dust spray can often be used as a freeze spray. Many gas dusters contain HFC-134a (tetrafluoroethane), which is widely used as a propellant and refrigerant. HFC-134a sold for those purposes is often sold at a higher price, which has led to the practice of using gas dusters as a less expensive source of HFCs for those purposes.

  7. Hunter Biden laptop controversy - Wikipedia

    en.wikipedia.org/wiki/Hunter_Biden_laptop...

    In October 2020, a controversy arose involving a laptop that belonged to Hunter Biden. The owner of a Delaware computer shop, John Paul Mac Isaac, said that the laptop had been left by a man who identified himself as Hunter Biden. Mac Isaac also stated that he is legally blind and could not be sure whether the man was actually Hunter Biden. [1]