Wireless LAN card and method of controlling the same

A method of controlling a wireless LAN card connectable to a portable computer having a main body with a PCMCIA socket, comprising:

• connecting a wireless LAN board to the PCMCIA socket, the wireless LAN board converting data received though the PCMCIA socket into packet data;
• sensing whether a wireless transmission board is connected to the wireless LAN board, the wireless transmission board modulating and demodulating the packet data of a specific frequency modulation range and sending and receiving data wirelessly;
• and
• sending and receiving the packet data wirelessly via the wireless transmission board when the wireless LAN board and the wireless transmission board are connected.

A wireless LAN card connectable to a computing apparatus having a main body with a detachable connection, comprising:

• a wireless transmission board detachably connected to a wireless LAN board and comprises:
• a wireless sending/receiving part to modulate and to demodulate packet data of a frequency modulation range and to send data to and receive data from the wireless LAN board;
• and
• a wireless LAN board comprising:
• a controller to sense whether the wireless transmission board is connected to the wireless LAN board;
• and
• a memory to store the data received from the main body, the wireless transmission board detachably connectable to the wireless LAN board such that when the wireless transmission board is not connected to the wireless LAN board, the memory stores the data received from the main body in the memory and reads the data stored in the memory according to a control by the main body.

A method of controlling a wireless LAN card connectable to a computing apparatus having a main body with a detachable connection, comprising:

• connecting a wireless LAN board to the detachable connection, the wireless LAN board converting data received though the detachable connection into packet data;
• sensing whether a wireless transmission board is connected to the wireless LAN board, the wireless transmission board modulating and demodulating the packet data of a designated frequency modulation range and sending and receiving data wirelessly;
• and
• sending and receiving the packet data wirelessly via the wireless transmission board when the wireless LAN board and the wireless transmission board are connected.

A method of controlling a wireless LAN card having a wireless transmission board and a wireless LAN board, the wireless LAN board connectable to a computing apparatus having a main body by a detachable connection, comprising:

• connecting the wireless LAN board to the main body;
• sending and receiving data from the main body to the wireless LAN board;
• sensing whether the wireless transmission board is connected to the wireless LAN board;
• storing the data received from the main body, when the wireless transmission board is not connected to the wireless LAN board;
• and
• converting data into packet data for a wireless transmission, when the wireless transmission board is connected to the wireless LAN board.