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  2. Hunter Biden laptop controversy - Wikipedia

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

    The analysis, conducted by Computer Forensics Services, found data, including over 120,000 emails, "consistent with normal, everyday use of a computer", found "no evidence that the user data had been modified, fabricated or tampered with", and found no new files created on the laptop after April 2019, when Mac Isaac received the laptop.

  3. Touchpad - Wikipedia

    en.wikipedia.org/wiki/Touchpad

    Closeup of a touchpad on an Acer CB5-311 laptop Closeup of a touchpad on a MacBook 2015 laptop. A touchpad or trackpad is a type of pointing device.Its largest component is a tactile sensor: an electronic device with a flat surface, that detects the motion and position of a user's fingers, and translates them to 2D motion, to control a pointer in a graphical user interface on a computer screen.

  4. Optical mouse - Wikipedia

    en.wikipedia.org/wiki/Optical_mouse

    An early Xerox optical mouse chip, before the development of the inverted packaging design of Williams and Cherry. The first two optical mice, first demonstrated by two independent inventors in December 1980, had different basic designs: [2] [3] [4] One of these, invented by Steve Kirsch of MIT and Mouse Systems Corporation, [5] [6] used an infrared LED and a four-quadrant infrared sensor to ...

  5. QR code - Wikipedia

    en.wikipedia.org/wiki/QR_Code

    The QR code system was invented in 1994, at the Denso Wave automotive products company, in Japan. [5] [6] [7] The initial alternating-square design presented by the team of researchers, headed by Masahiro Hara, was influenced by the black counters and the white counters played on a Go board; [8] the pattern of position detection was found and determined by applying the least-used ratio (1:1:3 ...

  6. Computer mouse - Wikipedia

    en.wikipedia.org/wiki/Computer_mouse

    A computer mouse with the most common features: two buttons (left and right) and a scroll wheel (which can also function as a button when pressed inwards) A typical wireless computer mouse. A computer mouse (plural mice, also mouses) [nb 1] is a hand-held pointing device that detects two-dimensional motion relative to a surface

  7. Integrated circuit - Wikipedia

    en.wikipedia.org/wiki/Integrated_circuit

    A microscope image of an integrated circuit die used to control LCDs.The pinouts are the dark circles surrounding the integrated circuit.. An integrated circuit (IC), also known as a microchip, computer chip, or simply chip, is a small electronic device made up of multiple interconnected electronic components such as transistors, resistors, and capacitors.

  8. WhatsApp - Wikipedia

    en.wikipedia.org/wiki/WhatsApp

    WhatsApp (officially WhatsApp Messenger) is an instant messaging (IM) and voice-over-IP (VoIP) service owned by technology conglomerate Meta. [14] It allows users to send text, voice messages and video messages, [15] make voice and video calls, and share images, documents, user locations, and other content.

  9. Computer memory - Wikipedia

    en.wikipedia.org/wiki/Computer_memory

    Historical lowest retail price of computer memory and storage Electromechanical memory used in the IBM 602, an early punch multiplying calculator Detail of the back of a section of ENIAC, showing vacuum tubes Williams tube used as memory in the IAS computer c. 1951 8 GB microSDHC card on top of 8 bytes of magnetic-core memory (1 core is 1 bit.)

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