Operating Instructions
Thank you for purchasing a
WD-35001-85 Tech Board
™
Plus —
the ultimate technical organizer!
It features:
• Full-function scientific
calculator
• A 24-hour count-up
stopwatch
• Real-time clock with
time of day and calendar
• Selectable audible alarm clock
• Common conversion
tables and a Periodic
Table of the Elements
for quick reference
• Sturdy clipboard
that tightly
holds your papers
• Paper guide that keeps
your papers neatly aligned
• Handy 30-cm ruler
© 198
OAKTONTBPlus Instructions 398
Table of contents:
1. Clock and Stopwatch buttons
..........................page 2
2. Time and Calendar functions
............................page 2
3. Alarm functions ..................................................
page 3
4. Stopwatch functions
..........................................
page 3
5. Calculator functions
....................................pages 4-15
5.1. Care of your calculator
........................................................page 4
5.2. Basic calculator functions
..............................................pages 4-6
5.3. Memory functions
..................................................................page 7
5.4. Algebraic functions
..........................................................pages 8-9
5.5. Trigonometric and geometric functions
....................pages 10-11
5.6. Statistical functions
......................................................pages 12-13
5.7. Base system modes
............................................................page 14
5.8. Display symbols ..................................................................page 15
6 Battery replacement
..........................................
page 15
7. Specifications......................................................
page 15
8. Index ....................................................................
page 16
9. Warranty/Return of Items
................................page 16
