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2. Flip chart - Wikipedia

   en.wikipedia.org/wiki/Flip_chart

   Flip chart. A flip chart is a stationery item consisting of a pad of large paper sheets. It is typically fixed to the upper edge of a whiteboard, or supported on a tripod or four-legged easel. Such charts are commonly used for presentations .

3. Flip chip - Wikipedia

   en.wikipedia.org/wiki/Flip_chip

   Flip chip. Flip chip, also known as controlled collapse chip connection or its abbreviation, C4, [1] is a method for interconnecting dies such as semiconductor devices, IC chips, integrated passive devices and microelectromechanical systems (MEMS), to external circuitry with solder bumps that have been deposited onto the chip pads.

4. Telephone keypad - Wikipedia

   en.wikipedia.org/wiki/Telephone_keypad

   A telephone keypad using the ITU E.161 standard. A telephone keypad is a keypad installed on a push-button telephone or similar telecommunication device for dialing a telephone number. It was standardized when the dual-tone multi-frequency signaling (DTMF) system was developed in the Bell System in the United States in the 1960s that replaced ...

5. Flat no-leads package - Wikipedia

   en.wikipedia.org/wiki/Flat_no-leads_package

   Flat no-leads, also known as micro leadframe (MLF) and SON (small-outline no leads), is a surface-mount technology, one of several package technologies that connect ICs to the surfaces of PCBs without through-holes. Flat no-lead is a near chip scale plastic encapsulated package made with a planar copper lead frame substrate.

6. Chip-scale package - Wikipedia

   en.wikipedia.org/wiki/Chip-scale_package

   A chip scale package or chip-scale package ( CSP) is a type of integrated circuit package. [1] Originally, CSP was the acronym for chip-size packaging. Since only a few packages are chip size, the meaning of the acronym was adapted to chip-scale packaging. According to IPC 's standard J-STD-012, Implementation of Flip Chip and Chip Scale ...

7. One-time pad - Wikipedia

   en.wikipedia.org/wiki/One-time_pad

   One-time pad. A format of one-time pad used by the U.S. National Security Agency, code named DIANA. The table on the right is an aid for converting between plaintext and ciphertext using the characters at left as the key. In cryptography, the one-time pad ( OTP) is an encryption technique that cannot be cracked, but requires the use of a single ...