SEWING MACHINE

PROBLEM TO BE SOLVED: To provide a sewing machine which compares sewing data in a transfer source with sewing data in a transfer destination and transfers a different portion.SOLUTION: When an examination flag is in an ON state (S41: YES), and when a memory card stores sewing data having a pattern number CT (S43: YES), and a nonvolatile memory stores the sewing data (S45: YES), a CPU increments the value of CT (S53). The CPU continues the examination while the value of CT is equal to or less than a maximum value (S55: NO). When the memory card stores the sewing data having the pattern number CT (S43: YES), and the nonvolatile memory does not store the sewing data (S45: NO), the CPU turns a read flag into an ON state (S47). When the read flag is in the ON state (S61: YES), the CPU transfers specified bytes of the sewing data having the pattern number CT from the memory card to the nonvolatile memory in accordance with a read pointer (S63).