The main menu

If you hit the PRG key in user mode, you will get a main menu for the HP48, not only for Erable. This menu will help new users of the HP48. Experienced users can remove this key assignment, saving some memory (using the command 22.1 DELKEYS). Here is a brief description of this main menu:

1.

EDITORS:

• EDIT LEVEL 1:
  To modify the object at stack level 1 (shortcut: downarrow)
• VIEW LEVEL 1:
  To view (not modify) the object at stack level 1 (shortcut: left shift- downarrow)
• EDIT STACK:
  To Delete, copy or move object from one stack level to another stack level (shortcut: uparrow or right shift-uparrow)
• SPEC. CHAR.:
  To get special characters (shortcut: right shift-PRG)
• NEW EQUATION:
  To enter a new equation in the EquationWriter environment (shortcut: left shift-ENTER)
• NEW TEXT:
  Enter a new string with the Minwriter editor. See the Minwriter documentation for editing keys.
• NEW MATRIX:
  Enter a numeric array in the MatrixWriter environment (shortcut: right shift-ENTER)
• NEW LIST:
  Enter a new list with the Minwriter editor.
• NEW PROGRAM:
  Enter a new program with the Minwriter editor.
• PICTURE:
  Modify the graphic object (e.g. the graph of a function) in the PICTURE environment (shortcut: left shift-rightarrow)

2.

VAR, I/O:

• MEMORY:
  The memory handler of the HP48: see your variable and their contents (shortcut: right shift-VAR)
• SEND/GET:
  The Input/Output menu of the HP48, to exchange files with a computer or another HP48 (shortcut: right shift-1)
• PORTS:
  Management of your RAM/ROM card extensions (shortcut left shift-1)

3.

PROGRAMS:

• USER PROG:
  The programmation menu of the HP48 (shortcut in user mode: $\alpha$-right shift-PRG)
• LIBRARIES:
  The libraries installed (shortcut rightshift-2)

4.

PHYSICS

• EQ. LIBRARY:
  The Equation Library of the HP48 (shortcut: right shift, 3)
• CONSTANTS:
  Physical constants and other utilities (shortcut left shift-3). Choose COLIB (B menu key) to get either the library of constants (CONLI) or the CONST function (convert e.g. 'c' at level 1 to the speed of light)
• DATE & TIME:
  To set or modify the date and the time, and compute with dates and time (shortcut: left shift-4)

5.

SETUP

• CALC MODES:
  Modes of the HP48: system flags, angle format, clock display, ... (shortcut right shift-CST)
• RESET ERABLE:
  Like the VER command of Erable: restore standard state (no shortcut)
• REAL MODE:
  Put Erable in real mode, like the command 13 CF
• COMPLEX MODE:
  Put Erable in complex mode, like the command 13 SF
• INTEGER ARIT:
  Assumes now that you are doing arithmetic on integers, not polynomials, like the command 10 SF
• POLYN. ARIT:
  Assumes now that you are doing arithmetic on polynomials, not integers, like the command 10 CF
• NUMERIC MODE:
  Asumes now that your integer input are not exact but numeric, like the command XNUM
• SYMBOLIC MODE:
  Assumes now that you integer input are exact, not numeric approximations, like the command XQ
• TIME SETUP:
  The TIME menu of the HP48 to set, browse alarms and date/time (shortcut right shift-4)

6.

STATISTICS
The STAT menu of the HP48: single-var, frequencies, fit data, summary stats (shortcut: right shift-5)

7.

UNITS:
The UNITS menu of the HP48: length, area, volume, time, speed, mass, force, energy, power, pressure, temperature, electricity, angle, light, radioactivity, viscosity (shortcut: right shift, 6)

8.

NUMERIC
The built-in numerical functions of the HP48:

• MATH FNCS
  vectors, matrices, list, hyperbolic, real fonctions, base probability, Fast Fourier Transform, complex, constants: the built-in MTH menu (shortcut in user mode: $\alpha$-right shift-MTH)
• SOLVE EQN
  The SOLVE menu of the HP48: numeric or semi-numeric solutions for equations, differential equations, polynomial, linear systems, financial problems (shortcut: left shift-7)

9.

GRAPH
If you want to plot the function at stack level 1, choose PLOT LEVEL 1, otherwise choose PLOT MENU

10.

ERABLE
To launch the Erable main menu if you don't remember that the MTH key does it directly. See description above.