To check on the amount of free and used memory, just press and release the FUNC key, then press and release the 1 key, then press and release the 0 key. This is called ‘Function 10‘.
The display will show something like this:
29 used,
31083 free
This means that 29 characters of memory are currently in use for storing barcodes, and 31,083characters of memory are still available. Each barcode stored takes up the number of characters in the barcode plus one character of overhead to mark the end of each barcode.
