General Guide; Key Markings; How To Read The Display - LEXIBOOK GC500i Instruction Manual

GB

1. GENERAL GUIDE

Before using this unit for the first time, be sure to perform the RESET operation
IMPORTANT- the keys of a scientific calculator perform more than one function. The following explains all of the
operations of each key, and so you should read this section carefully before using your calculator for the first time.

1.1 KEY MARKINGS

The keys of this unit perform a number of different functions. The key illustrated below, for example, is used to
perform 4 different functions: X -1 , X!, A, /A.
Note the following, concerning the key illustrated above.
Mode
Direct Input
SHIFT
ALPHA
BASE-N, HEX
The keys of this calculator can perform a number of different functions. The keyboard is color-coded to help you
quickly determine the key sequence you have to perform for each function. The following table shows how to
interpret the various key marking on the keyboard.
Keyboard Marking
Yellow
Blue
Green
In red brackets
In addition to the above, there are a number of key sequences indicated on the panel beneath the display (such
as [ ] [2 Sx]). These key sequences can be used in the SD or LR mode only.
ALPHA

1.2 HOW TO READ THE DISPLAY

1.2.1 Display indicators
The following indicators appear on the display to show you the current status of the calculator at a glance.
S :
SHIFT
M :
MODE
A :
ALPHA
Sci : Number of significant digits specified
Fix : Number of decimal places specified
hyp :
hyp
D: Degrees specified at the unit of angular measurement
R: Radians specified at the unit of angular measurement
G: Grads specified at the unit of angular measurement
WRT : Program write mode (
PCL : Program clear mode (
X=, Y= : Indicates current x- and y- coordinate location of Trace function pointer
← → : Indicates display consists of more the 12 characters. ← indicates extra characters run off left
side of display, → indicates characters run off right side.
Disp : Indicates displayed value is intermediate result
- 6 -
X !
X -1
/A A
Function
X -
1
!
X
A
/A
Meaning
Press and then key
SHIFT
Press and then key
ALPHA
Press key in BASE-N mode
Press key in SD or LR mode
key pressed
key pressed.
key pressed
key pressed
) specified
MODE 2
) specified
MODE 3
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EXIBOOK