NEW KID ON THE BLOCK reincarnation of an

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

NEW KID ON THE BLOCK reincarnation of an old friend 2

NEW KID ON THE BLOCK reincarnation of an old friend 3

DM 42 P 4

DM 42 P Objectives • Compatibility – Size – Functionality – Programmability – User interface – Printing • Improve on annoying deficits – I/O for backup and recovery – Memory – User Interface 5

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

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

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

DM 42 P Improvements over HP-42 S • Screen – Size 58. 8 x 35. 28 mm² – Pixel area 400 x 240 – Dot pitch 0. 147 x 0. 147 mm² – 2. 7“ Memory LCD – 50µW static <175µW dynamic 9

DM 42 P Improvements over HP-42 S • Screen 10

DM 42 P Improvements over HP-42 S • User Interface – Dedicated Soft Menu Keys – All other keys keep their original function 11

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

DM 42 P Software • Free 42 – Free Software GPL – Like a rough diamond • Needs adjustments for – Hardware – Additional I/O – Improved U/I • Updates via USB 13

DM 42 P Hardware • Body – black coated stainless steel – Black on yellow ink. Chars by Laser – Keys UV-hardened ink • Screen – 2. 7 -inch HR-TFT Transflective – Described before • CPU-Board – – STM 32 L 476 RG ARM Cortex-M 4 MCU 80 MHz Ultra-low-power with FPU 128 Kbyte SRAM, 1 Mbyte flash • Additional 4 Mbyte flash 14

DM 42 P Hardware • Power consumption – At 27 Mhz, continuous ops 50 h – Screen on but idle 2000 h ~ 80 days – While off ? ? 15

DM 42 P Speed • Simple Program 38 Byte – Calculate GC-Distance – HP-42 S 50 loops = 30 sec – DM 42 P 500 loops = 6 sec – DM 42 P 50 x faster 16

DM 42 P Status • Project in being – Free 42 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 17

DM 42 P Outlook • Hopefully available 2016 • Price < 200 US$ • Platform for – new. RPL? – DM-43 S? 18

DM 42 P Outlook • WP 43 S ? • DM 43 ? • Picture from Jake Schwartz – Original Walter Bonin? • MOQ ~50 Pcs – For different labeling 19

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