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Programmer (hardware)
In the field of computer hardware, the term programmer, chip programmer or device programmer refers to a device that configures programmable non-volatile digital circuits such as EPROMs, EEPROMs, Flashes, PALs, FPGAs or programmable logic circuits.
==Function==
For programming a circuit, it is either inserted into a socket (often ZIF) on top of the programmer, or the programmer is directly connected by an adapter to the circuit board (In-System Programming). Afterwards the data is transferred into the circuit by applying signals to the connecting pins. Some circuits have a serial interface for receiving the programming data (JTAG interface). Other circuits require the data on parallel pins, followed by a programming pulse with a higher voltage for programming the data into the circuit.
Usually device programmers are connected to a personal computer through a printer connector, USB port or LAN interface. A software program on the computer then transfers the data to the programmer, selects the circuit and interface type, and starts the programming process.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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