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  2. RS-485 - Wikipedia

    en.wikipedia.org/wiki/RS-485

    RS-485, also known as TIA-485(-A) or EIA-485, is a standard, originally introduced in 1983, defining the electrical characteristics of drivers and receivers for use in serial communications systems. Electrical signaling is balanced , and multipoint systems are supported.

  3. Train communication network - Wikipedia

    en.wikipedia.org/wiki/Train_communication_network

    The standard connector for the WTB nodes is a DIN 9 pin connector. The physical level uses RS-485 levels at 1 Mbit/s data rate. The encoding uses a Manchester II code and a HDLC frame protocol with proper voltage balancing to avoid DC components in the galvanic isolation transformers.

  4. Serial port - Wikipedia

    en.wikipedia.org/wiki/Serial_port

    A male DE-9 connector on an IBM PC compatible computer (with serial port symbol) used for an RS-232 serial port A female DE-9 connector on an RS-232 cable.. A serial port is a serial communication interface through which information transfers in or out sequentially one bit at a time. [1]

  5. Modular connector - Wikipedia

    en.wikipedia.org/wiki/Modular_connector

    The first types of small modular telephone connectors were created by AT&T in the mid-1960s for the plug-in handset and line cords of the Trimline telephone. [1] Driven by demand for multiple sets in residences with various lengths of cords, the Bell System introduced customer-connectable part kits and telephones, sold through PhoneCenter stores in the early 1970s. [2]

  6. Pin grid array - Wikipedia

    en.wikipedia.org/wiki/Pin_grid_array

    Closeup of the pins of a pin grid array The pin grid array at the bottom of prototype Motorola 68020 microprocessor The pin grid array on the bottom of an AMD Phenom X4 9750 processor that uses the AMD AM2+ socket. A pin grid array (PGA) is a type of integrated circuit packaging. In a PGA, the package is square or rectangular, and the pins are ...

  7. JTAG - Wikipedia

    en.wikipedia.org/wiki/JTAG

    JTAG (named after the Joint Test Action Group which codified it) is an industry standard for verifying designs of and testing printed circuit boards after manufacture.. JTAG implements standards for on-chip instrumentation in electronic design automation (EDA) as a complementary tool to digital simulation. [1]

  8. ATtiny microcontroller comparison chart - Wikipedia

    en.wikipedia.org/wiki/ATtiny_microcontroller...

    ATtiny2313 in 20-pin narrow dual in-line package (DIP-20N) ATtiny (also known as TinyAVR) is a subfamily of the popular 8-bit AVR microcontrollers, which typically has fewer features, fewer I/O pins, and less memory than other AVR series chips.

  9. MOS Technology 6507 - Wikipedia

    en.wikipedia.org/wiki/MOS_Technology_6507

    The 6507 uses a 28-pin configuration, with 13 address pins (A0..A12) and 8 data pins (D0..D7). The seven remaining pins are used for power (Vss, Vcc), the CPU timing clock (φ0, φ2), to reset the CPU (the /RES pin), to request a CPU wait state during its next memory read access (the RDY pin), and for the CPU to indicate if a read or write memory (or MMIO device) access is being performed (the ...