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HP 38g Calculator - Using Lists

Description
List operations can be done in HOME and in PROGRAMS. The elements of a list appear in braces and are separated by commas, such as {A, B, C} or {1, 2, 3}.
 note:
If the decimal mark in modes is set to comma, then the separators are periods.
Calculator symbol key
The procedures in this document use the following text to represent symbol keys:
Key
Description
Text Representation
colored key; shift key
SHIFT
Move cursor left
cursor-left
Move cursor right
cursor-right
Move cursor up
cursor-up
Move cursor down
cursor-down
Backspace/clear
backspace
List variables
There are ten list variables available, named L1 through L9 and L0. These can be used in calculations or expressions in HOME or in a program. List names can be accessed from the VAR menu, or just type their names from the keypad.
Creating and storing lists
Named lists can be created, edited, sent, and received in the list catalog (the list catalog is accessed by pressing SHIFT, then LIST). Named or un-named lists can also be created and stored in HOME.
Creating a list in the list catalog
To create a list in the LIST CATALOG:
  1. Press SHIFT, then LIST
  2. Highlight the list name desired (L1, etc.) and press EDIT
  3. For each item, enter the value and press ENTER. This value can be a real or complex number (or expression).
  4. When done, press SHIFT, then LIST to see the LIST CATALOG, or press HOME to return to the HOME screen for calculations.
List catalog keys
The following table contains a list of the LIST CATALOG keys for the HP 38g graphing calculator.
Key
Meaning
EDIT
Opens the highlighted list for editing
SEND
Transmits the highlighted list to another HP 38g or a disk drive
RECV
Receives a transmitted list from another 38g or disk drive
DEL
Clears the highlighted list
SHIFT, then CLEAR
Clears all lists
SHIFT, then cursor-up or down
Moves to the end or beginning of the catalog
List editing keys
The following table contains a list of the list editing keys for the HP 38g graphing calculator.
Key
Description
EDIT
Copies the highlighted list item into the edit line
INS
Inserts the value you type as the item before the highlighted item
DEL
Deletes the highlighted list item from the list
SHIFT, then CLEAR
Clears all elements from a list
SHIFT, then cursor-up or down
Moves to the end or the beginning of a list
Displaying a list
To display a list:
  1. In the LIST CATALOG, highlight the list name and press EDIT
  2. In HOME, enter the name of the list and press ENTER
Displaying one element
In HOME, enter listname(element#). For example, if L2 is {3, 4, 5, 6}, then L2(2) then ENTER returns 4.
Deleting a list
To delete a list:
  1. In the LIST CATALOG (SHIFT, then LIST), highlight the list name.
  2. Press DEL, then YES (the name will remain).
Deleting all lists
To delete all lists:
  1. Go to the LIST CATALOG by pressing SHIFT, then LIST
  2. Press SHIFT, CLEAR, then YES to clear all lists.
Transmitting a list
Lists can be sent to and received from other calculators just as APLETS, programs, matrices, and notes. To transmit a list:
  1. After aligning the calculators' infrared ports, open the LIST CATALOGS (SHIFT, then LIST) on both calculators.
  2. On the sending calculator:
    1. Highlight the list to be sent.
    2. Press SEND
  3. On the receiving calculator, press RECV
Creating a list in HOME
To create a list in HOME:
  1. Enter the list in the edit line. Start and end the list with braces (SHIFT, then 8 and SHIFT, then 9), and separate each element with a comma.
  2. Press ENTER to evaluate and display a list.
     note:
    Immediately after typing in the list, store it in a variable by pressing STO, then cursor-right, listname, then ENTER. The list names are L1 through L9 and L0.

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