hence faster than the Serial interface
note that when you are using ArduinoISP, data is still sent over the serial port between the PC and the Arduino running ArduinoISP, before it is sent over SPI to the target chip being programmed.
hence faster than the Serial interface
note that when you are using ArduinoISP, data is still sent over the serial port between the PC and the Arduino running ArduinoISP, before it is sent over SPI to the target chip being programmed.