HP 20b Consultant Financial, 30b Professional manual Program Step

Keys Display Description

Quits program editing mode. Note that

:E program 0 uses 13 bytes and has a checksum of 104. Checksum is a number that verifies the program data is correct. You must be set in FIX 3 or higher to see the full checksum. If your number does not match that shown, verify your FIX setting is set for 3 or higher. If three digits are showing and the number differs from that shown, the program has been keyed in incorrectly.

5==

Program Step 0

Enters the number 5 (the sphere radius) and executes program 0. The result, the volume of the sphere, is 523.6. We press

=twice: the first press completes the

entry of the 5 (after all, we could have been in the process of entering an equation, such as 5*2). The second press runs the program.

Programs start at step 1, however, if you edit a program by pressing Iwith the

program displayed and press the up key >, you will find there is a step 0. Press any key with step 0 displayed and that key becomes a shortcut for the program. You may also assign any :(HOLD) key combination as well.

For example, with the sphere example shown in Table 13-2, after your program has calculated the solution, press :Eto open the program menu once again. Prgm 0 is displayed,

Figure 1

the program used for the sphere example (Figure 1). Press I, followed by >to select step 0. Press :followed by k(assuming you are not interested in using the kkey). Exit the program by pressing O, key in a number, 5, and then press

:kand you will see the your program was executed with the same results as shown in the table!

78 Programming