  

where 67 is the number of bytes used by the program.

Clearing One or More Programs

To clear a specific program from memory

1.Press (2)and display (using Øand ×) the label of the program.

2.Press .

3.Press to cancel the catalog or to back out.

To clear all programs from memory:

1.Press to display program lines (PRGM annunciator on).

2.Press () to clear program memory.

3.The message     prompts you for confirmation. Press Ö()

.

4.Press to cancel program entry.

Clearing all of memory (()) also clears all programs.

The Checksum

The checksum is a unique hexadecimal value given to each program label and its associated lines (until the next label). This number is useful for comparison with a known checksum for an existing program that you have keyed into program memory. If the known checksum and the one shown by your calculator are the same, then you have correctly entered all the lines of the program. To see your checksum:

1.Press () for the catalog of program labels.

2.Display the appropriate label by using the cursor keys, if necessary.

3.Press and hold to display checksum and length.