Table of Contents
1: Introduction
page
4
1.1: Quick Overview on the Functions of DoubleCheck XL
page 4
1.2:
XL
Product
Series
page
4
2: Description and Scope of Delivery
page 4
3:
Power
Supply
page
5
4: Keyboard Layout
page
5
4.1: The 4 Auxiliary Keys
page 6
4.2: 3 x 3 Group (from left to right)
page 6
4.3: 4 x 4 Group (from left to right)
page 7
4.4: Switch the Device on and off
page 7
4.5: Menu Escape Function
page 7
4.6: Delete last Digit / delete all
page 7
4.7:
Keylock
page
7
4.8:
Volume
Control page
7
4.9:
Time
and
Date
page
8
4.10:
Memory
Function
page
8
4.10.1: Save Values
page
8
4.10.2: Select Stored Values
page 8
4.10.3: Delete Stored Values
page 8
4.11:
Repeat
Function
page
8
4.12: Backlit Display (option)
page 8
5:
Arithmetic
Procedures
page
8
5.1: Standard Arithmetic Functions
page 8
5.2: Advanced Arithmetic Functions
page 9
5.2.1: Percentages
page
9
5.2.2: Square a Given Number
page 9
5.2.3: Extract a Square Root
page 9
5.2.4:
Reciprocal
Value page
9
5.2.5:
To
the
Power
of
page
9
5.2.6:
Π
(Pi)
page
9
5.2.7:
Change
Sign page
10
5.3:
Conversions
page
10
5.3.1: Currency Conversion page
10
5.3.2:
Custom
Conversion
page
10
5.4:
Commercial
Calculator
page
10
5.4.1:
Compound
Interest
page
11
5.4.2:
Net
Present
Value
page
11
5.4.3:
Annuity page
11
5.4.4:
Annuity
Initial
Capital
page
12
6:
Help
Mode page
12
7:
Menu
page
12
7.1: Number Announcement Format
page 12
7.2:
Alarm
page
13
7.3:
Time
page
13
7.4:
Date
page
13
7.5:
Rounding
page
13
Summary of Contents for DoubleCheck
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