This simple programmer is a slimmed-down version of the programmer described in the March issue. It provides an extremely low-cost entry into developing applications using AVR microcontrollers. For this reason, particular attention has been given to achieving a simple, economical design.The programmer is connected to the PC by a standard RS232 interface. No external supply voltage is required to use the programmer, since the necessary current (a few milliampères) can be drawn directly from the serial port of the computer.
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