HP16C vs my16c

A faithful recreation of the legendary HP 16C Computer Scientist calculator for iPhone, with a few modern upgrades. If you've ever needed to perform hex arithmetic, bit manipulation, or base conversion on your phone and been frustrated by the available options, this is for you. RPN-16C gives you the full power of the original HP 16C in your pocket. WHAT IT DOES - Full RPN (Reverse Polish Notation) calculator - Integer arithmetic in HEX, DEC, OCT, and BIN - Configurable word size from 1 to 64 bits - Unsigned, one's complement, and two's complement modes - Complete bit operations: shift, rotate, rotate through carry, AND, OR, XOR, NOT, mask, bit set/clear/test, count bits, left justify - Float mode with configurable precision (FLOAT 0-9) - Keystroke programming with labels, subroutines, loops, and conditionals - Storage registers with direct and indirect addressing - Programs can be imported from text (long-press the display to paste) ENHANCEMENTS OVER THE ORIGINAL - Two-line display: see both X and Y registers at once. No more guessing what's on the stack. - Wider LCD: displays all 32 bits in binary without scrolling. The original could only show 8 at a time. - Haptic feedback on every key press - State persistence: pick up right where you left off - SHOW function to peek at values in other bases FAIR WARNING This is a quirky calculator. It uses Reverse Polish Notation, has no equals key, and expects you to know what two's complement means. If you're looking for a simple calculator, this is not it. If you've ever wished you could do a bitwise rotate through carry on your phone, welcome home. DESIGNED FOR PROGRAMMERS The key layout matches the physical HP 16C exactly, including the f (gold) and g (blue) shift labels. If you know the original, you already know this one. The original HP 16C Owner's Handbook is freely available on the Internet Archive: https://archive.org/details/hp-16c_handbook

The programmer's calculator that defined an era — now in your pocket. my16C brings the legendary 16C Voyager series programmer's calculator back to life with cycle-accurate emulation running the original microcode. Every keystroke, every display flicker, every RPN operation — faithfully reproduced. WHY PROGRAMMERS LOVE THE 16C The 16C wasn't just a calculator — it was the essential tool for every serious programmer and computer engineer in the 1980s. Its unique combination of base conversions, bit manipulation, and RPN logic made it indispensable. Decades later, it remains unmatched. FEATURES • Cycle-accurate emulation — runs the original Voyager microcode, not a simulation • Full base conversion — HEX, DEC, OCT, and BIN at the press of a key • Bit operations — shifts, rotates, AND, OR, XOR, NOT, 1's and 2's complement • RPN entry — the efficient Reverse Polish Notation stack system • Programmable — write, store, and run programs just like the original • Authentic 7-segment LCD display with all original annunciators • Word size control (WSIZE) — work with 8, 16, 32, or 64-bit integers • Floating point mode for standard calculations • Unsigned and signed arithmetic modes BUILT FOR TODAY • iCloud sync — your calculator state follows you across devices • Native on iPhone and Mac — landscape optimized on iOS, resizable window on macOS • Full keyboard support on Mac — type numbers and operators directly • Dark interface faithful to the original Voyager design • Built-in Owner's Manual for quick reference TRY BEFORE YOU BUY my16C includes a free trial period so you can experience the full calculator before purchasing. A single one-time purchase unlocks the app forever — no subscriptions. Whether you're a software engineer debugging hex values, a retro computing enthusiast, or someone who remembers the original on their desk — my16C is the most authentic way to use the legendary 16C today.