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Single handshaking lets the sender tell the receiver that a new frame (a fixed predetermined number of bytes) is ready to be sent and lets the receiver notify the sender that it has received the information. After strobing, the sender sends the frame. When single handshaking is used, the sender sends out data and the strobe signal without worrying about whether the receiver is ready to receive the data. The strobe signal is controlled by the sender. The acknowledge signal is controlled by the receiver. Data is sent by the sender.