Two errors, as an example

Two errors, as an example

Make two errors on purpose to see what happens. First, for a division by zero, press on C, type 1, press divide, type 0, and press equals. The display shows ERROR 02, a calculation error. The left arrow returns to the expression, with the cursor where the error happened, so you can correct it. For a syntax error, press on C, type 2, press plus, then minus key, type 5, and press equals: ERROR 01. Subtraction cannot follow plus. Again the left arrow returns to the expression. A negative number is typed with the negative key: press on C, type 2, press plus, the negative key, type 5, and press equals: −3..