1. reincarnation of an old friend
NEW KID ON THE BLOCK
reincarnation of an old friend ??

2. NEW KID ON THE BLOCK reincarnation of an old friend

3. NEW KID ON THE BLOCK reincarnation of an old friend

4. DM42P

5. DM42P Objectives Compatibility Improve on annoying deficits Size
Functionality
Programmability
User interface
Printing
Improve on annoying deficits
I/O for backup and recovery
Memory
User Interface

6. DM42P Achievements Compatibility to HP-42S Size: Functions:
even a little bit smaller
Functions:
as good as Free 42
Programming:
99,9%
User interface:
improved

7. DM42P Improvements over HP-42S
I/O:
USB connection
power supply and data exchange
SDCARD-Slot
backup and restore
Printing on screen
Real time clock
I/R

8. DM42P Improvements over HP-42S
Memory:
128KB RAM, 5MB Flash
U/I: Large screen
soft menu and stack display
Additional key row
soft menu
Alpha keys directly on keypad

9. DM42P Improvements over HP-42S
Screen
Size 58.8 x mm²
Pixel area 400x240
Dot pitch x mm²
2.7“ Memory LCD
50µW static <175µW dynamic

10. DM42P Improvements over HP-42S
Screen

11. DM42P Improvements over HP-42S
User Interface
Dedicated Soft Menu Keys
All other keys keep their original function

12. DM42P Improvements over HP-42S
Alpha input
Alpha on the HP-42 laborious
Direct access to the alphabet.
All characters via the ALPHA menu
A very convenient improvement

13. DM42P Software Free42 Needs adjustments for Updates via USB
Free Software GPL
Like a rough diamond
Needs adjustments for
Hardware
Additional I/O
Improved U/I
Updates via USB

14. DM42P Hardware Body – black coated stainless steel Screen CPU-Board
Black on yellow ink. Chars by Laser
Keys UV-hardened ink
Screen
2.7-inch HR-TFT Transflective
Described before
CPU-Board
STM32L476RG
ARM Cortex-M4 MCU 80 MHz
Ultra-low-power with FPU
128 Kbyte SRAM, 1 Mbyte flash
Additional 4 Mbyte flash

15. DM42P Hardware Power consumption At 27 Mhz, continuous ops 50h
Screen on but idle 2000 h ~ 80 days
While off ??

16. DM42P Speed Simple Program 38 Byte Calculate GC-Distance
HP-42S 50 loops = 30 sec
DM42P 500 loops = 6 sec
DM42P  50x faster

17. DM42P Status Project in being Free42 runs on the HW 131*16 LCD so far
No fonts
USB power supply works
No SD support
No printing
No IR
No dedicated menu keys

18. DM42P Outlook Hopefully available 2016 Price < 200 US$ Platform for
newRPL?
DM-43S?

19. DM42P Outlook WP 43S ? DM 43 ? Picture from Jake Schwartz MOQ ~50Pcs
Original Walter Bonin?
MOQ ~50Pcs
For different labeling

20. reincarnation of an old friend
DM42P
NEW KID ON THE BLOCK
reincarnation of an old friend
HP-42S
THANK YOU