In 1982, Hewlett-Packard introduced a calculator that would become a legend among programmers: the HP 16c. Designed specifically for coding and debugging in hexadecimal, octal, and binary, it was a niche tool beloved by engineers and software developers. After production ceased in 1989, the HP 16c became a collector's item, often selling for hundreds of dollars on the secondary market.

Now, more than four decades later, Moravia Education has announced a resurrection of the HP 16c. The new model retains the classic look and feel of the original but brings modern upgrades: a faster processor, expanded memory, and—most importantly—the ability to save and load programs. This addresses one of the biggest limitations of the original, which could only store programs while powered on.

Only 10,000 units will be made, each priced at $129.95. The limited run ensures that the calculator remains a collectible while making it accessible to a new generation of programmers who appreciate retro computing tools.

A Brief History of the HP 16c

Hewlett-Packard's calculator division was at the forefront of engineering tools in the 1970s and 1980s. The HP 35, introduced in 1972, was the first scientific handheld calculator. The HP 41C series, launched in 1979, offered programmability and expandability. But it was the HP 16c, released alongside the HP 15c (for scientists) and HP 12c (for finance), that catered specifically to computer programmers.

The HP 16c used Reverse Polish Notation (RPN), a method of input that eliminates parentheses by placing operators after operands. While polarizing, RPN became a hallmark of HP calculators, praised for efficiency in complex calculations. The 16c supported four number bases (hexadecimal, octal, binary, and decimal) and offered bitwise operations, shift commands, and floating point conversion—essential for low-level programming and debugging.

Its display showed 16 digits in base 10, but internally it handled numbers up to 64 bits. Programmers used it to convert between bases, check memory addresses, and debug assembly code. The calculator had 203 program steps and 67 memory registers, expandable via optional memory modules.

Despite its niche appeal, the HP 16c developed a cult following. Its discontinuation in 1989 left a gap that no other calculator truly filled. Modern programmers turned to software emulators, but the tactile feel of real buttons and the discipline of RPN remained unmatched.

Why Moravia Education Revived the HP 16c

Moravia Education is not a name from the 1980s; it's a modern educational technology company based in the Czech Republic. The company specializes in designing and manufacturing calculators and educational tools that blend nostalgia with modern functionality. They have previously reissued classic HP calculators, such as the HP 15c, which returned in 2023 with similar upgrades.

“We saw a demand from the programming community for a tool that is both authentic and functional,” said a Moravia Education representative. “The original HP 16c is legendary, but its lack of persistent storage made it impractical for real-world use. We decided to bring it back with the features programmers need today, while preserving the look, feel, and operational logic that made it great.”

The new HP 16c uses a modern ARM processor emulating the original hardware. This allows for faster computation while maintaining full compatibility with historical software and algorithms. The most impactful upgrade is the ability to store programs in flash memory, allowing users to save their work and load it later, even after the calculator is turned off. Additionally, the battery life has been extended, and the LCD display now offers better contrast and viewing angles.

Moravia Education has also updated the keyboard layout slightly, adding dedicated save/load buttons but keeping the classic arrangement of keys. The calculator is powered by a rechargeable lithium-ion battery via USB-C, a far cry from the original's 9-volt battery or optional rechargeable pack.

Key Specifications and Features

• Processor: Modern ARM-based emulation running at several times the original speed
• Memory: 203 program steps (expandable) and 67 registers; program storage in non-volatile flash
• Number Bases: HEX, OCT, BIN, DEC with full bitwise operations
• Display: 10-digit LCD with adjustable contrast
• Power: Internal rechargeable Li-ion battery; USB-C charging
• Programming: RPN keystroke programming with ability to label, branch, and loop
• Dimensions: Same as original HP 16c – 5.0 x 3.2 x 0.6 inches
• Weight: Approximately 5 ounces

The new HP 16c also includes a suite of built-in functions for integer arithmetic, floating-point conversion, stack operations, and debugging. It can operate on numbers up to 64 bits, with signed and unsigned modes. For education, Moravia Education has provided a manual and tutorial in PDF format, plus a web-based simulator for learning RPN before using the physical device.

The Programming Experience

For those unfamiliar, programming the HP 16c involves entering a sequence of keystrokes that are recorded step by step. Unlike modern calculators with high-level languages, the HP 16c uses a simple but powerful system of RPN instructions. Each operation (add, subtract, shift, logical AND, etc.) is a single step. Conditional tests and loops (like DSE and ISG) can be inserted to create complex algorithms.

The original HP 16c could store up to 203 program steps in memory, but the new model effectively offers unlimited storage via the ability to save programs as files on the device. Users can switch between multiple programs, edit steps, and even debug using single-step execution. The upgrade makes the HP 16c a genuine alternative to software-based emulators for everyday programming tasks.

One enthusiast who tested a pre-release unit remarked, “It feels exactly like the original. The buttons have that same crisp click, and the RPN logic is the same. But now I can actually keep my programs for tomorrow. It’s a huge quality-of-life improvement.”

Market Reception and Availability

Pre-orders for the HP 16c opened on June 23, 2026, and quickly sold out within hours. Moravia Education confirmed that a second batch of pre-orders may be available in late July, though production remains limited to 10,000 units total. The price of $129.95 is roughly what vintage HP 16c calculators in good condition sell for on eBay, so the new model offers a better deal considering it is brand-new with modern features.

The announcement generated buzz on social media and programming forums. On Reddit’s r/programming, a post about the HP 16c received thousands of upvotes. “I never thought I’d see the day HP (through Moravia) brought back this calculator,” wrote one user. “I used my dad’s old HP 16c in college. I’m buying one immediately.”

Some critics noted that the price is higher than many modern graphing calculators, but defenders point out that the HP 16c is not a general-purpose tool; it is a specialized device for programmers. Moreover, the limited production run and collector appeal justify the cost.

Comparison with Other Retro Calculator Revivals

The HP 16c resurrection is part of a broader trend of classic calculator comebacks. Texas Instruments has reissued its TI-30 line with modern colors, and Casio has brought back the fx-7000G. However, the HP 16c stands out because it addresses a specific professional niche rather than a general consumer market.

Moravia Education previously revived the HP 15c in 2023, and that model became a bestseller among engineers and mathematicians. The success of the HP 15c likely encouraged the company to tackle the 16c. Both models share the same philosophy: preserve the original design, add persistent storage, and use modern internals to improve speed and reliability.

The HP 12c, the iconic financial calculator, has never truly gone away—HP still produces it in China. But the 16c and 15c were more specialized and were discontinued earlier. Their revivals fill a gap in the market for professional-grade programming and scientific calculators.

Impact on Programming Education

While most programming today is done on laptops and inside IDEs, some computer science courses still emphasize the fundamentals of low-level data representation. The HP 16c is an excellent teaching tool for understanding base conversions, bitwise operations, and the inner workings of CPUs. Its stripped-down interface forces students to think in terms of registers and instructions, much like assembly language.

Several universities have already expressed interest in using the new HP 16c in their digital logic or computer organization classes. “There’s something about having a dedicated device that keeps you focused,” said a professor of computer engineering. “When you use a general-purpose computer, distractions are always a click away. With a calculator, you only have the problem in front of you.”

Moravia Education has also offered educational pricing for bulk orders, making it feasible for classrooms to adopt the HP 16c. The included manual teaches RPN and programming concepts from the ground up.

Future Outlook

With only 10,000 units produced, the new HP 16c is likely to become a collector’s item quickly. Moravia Education has not announced plans for a second release, but if demand remains high, they might consider additional production runs or even a software app version.

The company has hinted at possibly reviving other classic HP calculators, such as the HP 41C or HP 28S, but no official announcements have been made. For now, the HP 16c is the focus of the retro calculator community’s attention.

In an era of touchscreen smartphones and cloud computing, the enduring appeal of a single-purpose, button-based calculator is a testament to the value of focused, well-designed tools. The HP 16c never really died; it just waited 44 years for a worthy revival.

Source: The Verge News