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

NEW KID ON THE BLOCK reincarnation of an old friend

NEW KID ON THE BLOCK reincarnation of an old friend

DM42P

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

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

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

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

DM42P Improvements over HP-42S Screen Size 58.8 x 35.28 mm² Pixel area 400x240 Dot pitch 0.147 x 0.147 mm² 2.7“ Memory LCD 50µW static <175µW dynamic

DM42P Improvements over HP-42S Screen

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

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

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

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

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

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

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

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

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

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