This is called the SPI interface (See Serial Peripheral Interface, Wikipedia. The pin names typically used for SPI are:

• GND : Power Ground
• VCC : Power input
• CS : Chipselect
• SCK/SCLK (SD-Clock): SPI Clock
• MOSI (SD-DI, DI) : SPI Master out Slave in
• MISO (SD-DO, DO) : SPI Master in Slave out
• CD: probably Collision Detection, although there is no specific Arduino SPI pin for that.

On an Arduino Uno the SPI pins are:

• CS – digital 10; this can be in principle any pin
• SCK – digital 13
• MOSI – digital 11
• MISO – digital 12

This is called the SPI interface (See Serial Peripheral Interface, Wikipedia. The pin names typically used for SPI are:

• GND : Power Ground
• VCC : Power input
• CS : Chipselect
• SCK/SCLK (SD-Clock): SPI Clock
• MOSI (SD-DI, DI) : SPI Master out Slave in
• MISO (SD-DO, DO) : SPI Master in Slave out
• CD: Card Detect (see comment of rollinger below (thanks).

On an Arduino Uno the SPI pins are:

• CS – digital 10; this can be in principle any pin
• SCK – digital 13
• MOSI – digital 11
• MISO – digital 12

This is called the SPI interface (See Serial Peripheral Interface, Wikipedia. The pin names typically used for SPI are:

• GND : Power Ground
• VCC : Power input
• CS : Chipselect
• SCK/SCLK (SD-Clock): SPI Clock
• MOSI (SD-DI, DI) : SPI Master out Slave in
• MISO (SD-DO, DO) : SPI Master in Slave out
• CD: probably Collision Detection, although there is no specific Arduino SPI pin for that.

This is called the SPI interface (See Serial Peripheral Interface, Wikipedia. The pin names typically used for SPI are:

• GND : Power Ground
• VCC : Power input
• CS : Chipselect
• SCK/SCLK (SD-Clock): SPI Clock
• MOSI (SD-DI, DI) : SPI Master out Slave in
• MISO (SD-DO, DO) : SPI Master in Slave out
• CD: probably Collision Detection, although there is no specific Arduino SPI pin for that.

On an Arduino Uno the SPI pins are:

• CS – digital 10; this can be in principle any pin
• SCK – digital 13
• MOSI – digital 11
• MISO – digital 12