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  2. vCard - Wikipedia

    en.wikipedia.org/wiki/VCard

    jCard, "The JSON Format for vCard" is a standard proposal of 2014 in RFC 7095.RFC 7095 describes a lossless method of representing vCard instances in JSON, using arrays of sequence-dependent tag–value pairs. jCard has been incorporated into several other protocols, including RDAP, the Protocol to Access White Space Databases (PAWS, described in RFC 7545), and SIP, which (via RFC 8688) uses ...

  3. Controlled payment number - Wikipedia

    en.wikipedia.org/wiki/Controlled_payment_number

    January 2009, MasterCard and Cyota Inc. acquired the controlled payment number system developed by Orbiscom, a Dublin-based payment processing company. [2] In the United States, the system is used by the following credit card issuers: Bank of America "ShopSafe" (inherited when it acquired MBNA) (and now discontinued-see below) [3] and Citibank "Virtual Account Numbers". [4]

  4. Virtual circuit - Wikipedia

    en.wikipedia.org/wiki/Virtual_circuit

    Please help improve it to make it understandable to non-experts, without removing the technical details. ( August 2012 ) ( Learn how and when to remove this message ) A virtual circuit ( VC ) is a means of transporting data over a data network, based on packet switching and in which a connection is first established across the network between ...

  5. Single-root input/output virtualization - Wikipedia

    en.wikipedia.org/wiki/Single-root_input/output...

    A major field of application for SR-IOV is within high-performance computing (HPC). The use of high-performance InfiniBand networking cards is growing within the HPC sector, and there is early research into the use of SR-IOV to allow for the use of InfiniBand within virtual machines such as Xen .

  6. Add or disable 2-step verification for extra security - AOL Help

    help.aol.com/articles/2-step-verification...

    How do I get an authenticator app? Download an authenticator app from the Google Play Store or App Store. Popular authenticator apps include Google Authenticator, Microsoft Authenticator, LastPass Authenticator, and Authy. Enable 2-step for authenticator app. Important - You may not see this option as it yet available for all accounts. 1.

  7. Operational transconductance amplifier - Wikipedia

    en.wikipedia.org/wiki/Operational_trans...

    The OTA is usually used "open-loop"; without negative feedback in linear applications. This is possible because the magnitude of the resistance attached to its output controls its output voltage. Therefore, a resistance can be chosen that keeps the output from going into saturation, even with high differential input voltages.

  8. In-system programming - Wikipedia

    en.wikipedia.org/wiki/In-system_programming

    In fact, the minimum required V pp level for some PICs can damage other PICs. V dd - This is the positive power input to the PIC. Some programmers require this to be provided by the circuit (circuit must be at least partially powered up), some programmers expect to drive this line themselves and require the circuit to be off, while others can ...

  9. Voltage-controlled oscillator - Wikipedia

    en.wikipedia.org/wiki/Voltage-controlled_oscillator

    VCOs can be generally categorized into two groups based on the type of waveform produced. [4]Linear or harmonic oscillators generate a sinusoidal waveform. Harmonic oscillators in electronics usually consist of a resonator with an amplifier that replaces the resonator losses (to prevent the amplitude from decaying) and isolates the resonator from the output (so the load does not affect the ...