Embroidering machine having an attachable memory card

An embroidering machine having a power source, a central processing unit, a random access memory (RAM), a buffer circuit, means for receiving and connecting to the buffer circuit a memory card selected from a plurality of memory cards each having embroidering pattern data stored therein, the buffer circuit being operated to connect a memory card in the receiving and connecting means to buses of the central processing unit so that the embroidering data of the selected memory card may be read out and temporarily stored in the random access memory, and means operated to read out the embroidering data from the random access memory and to control the machine according to the selected embroidering pattern, said embroidering machine comprising:

• means (DET) for detecting an attached or detached condition of a memory card in said receiving and connecting means, said detecting means producing a first signal when the memory card is in the attached condition and a second signal when the memory card is in the detached condition;
• indicating means (LED) responsive to said first signal of said detecting means to indicate that the memory card is accessed;
• display means (I/01, DISP) responsive to said second signal of said detecting means to display a prompt requiring the attachment of the memory card;
• and
• control means (I/01, NAND) responsive to said first signal of said detecting means to make said buffer circuit operative, and to said second signal of said detecting means to make said buffer circuit inoperative.