Try out an emulated version of the TI-84 Plus CE, the graphing calculator released by Texas Instruments in 2015.

Despite the abundance of free graphing software, Texas Instruments' de facto monopoly and the continued demand for its use in standardized testing have kept the cost and design of graphing calculators largely unchanged for decades.

View a library of custom programs that can be loaded onto graphing calculators, including productivity tools, reference materials, games, and interactive applications, such as prom proposals.

As of 2025, the College Board has banned the use of calculators with computer algebra systems on the SAT and PSAT.

Explore galleries of featured submissions from the Desmos Art Contest—a yearly competition where students from around the world submit original work made with graphing calculator tools.

Explore an emulated demo of Windows 95 Microsoft Plus to try your hand at Solitaire, 3D Pinball Space Cadet, and other classic Windows applications.

Use this day trading simulator to practice buying and selling stocks while leveraging real-time data and trading charts

Want to try day trading but don't want to risk losing cash? This simulator gives users access to "unlimited" fake money, as well as the option to convert their simulation accounts to the real deal later on.

VisiCalc was the first electronic spreadsheet, released with Apple II's personal computer in 1979

Before 1979, managers were essentially information processors working off paper ledgers. Scenario modeling was slow, manual, and expensive. Companies were understood as organizations that built things with financial analysis as secondary. VisiCalc made calculation so cheap that you could work iteratively, setting out forecasts and tweaking assumptions until you got the answer you wanted. Oks argues It created a new way of seeing the world.

Unsatisfied with the designs provided by an Apple engineer, Steve Jobs designed the original Mac calculator in about 10 minutes.

Designed in 1937 by Harvard graduate student Howard H. Aiken, the 'Harvard Calculator' was used by the US Navy to solve advanced physics problems.

Explore an optical table to create quantum physics experiments

This interactive teaches users to create quantum experiments through lessons resembling video game levels. Users can also use the virtual lab to visualize landmark quantum experiments like entanglement, teleportation, cryptography, and quantum computing, or create their own experiments with drag-and-drop elements.

Play a game of 1440's Tetris.

Watch a tech demo of the world's first consumer graphics processing unit, the Nvidia GeForce 256, released Oct. 11, 1999.

Slide rules—ruler-sized mechanical calculators with a component that slides out to show relationships between numbers—were used by engineers at NASA during the Apollo missions.

Simulate geological activity at plate boundaries using virtual planetary models.

One of the first mechanical calculators—the Pascaline—was built in the 1640s by French mathematician Blaise Pascal to help his father, who worked as a tax collector.

Read about a dating simulation game that helps prepare your income taxes

For the 2022 tax year, prank-playing creative studio MSCHF created a dating simulation game that helped taxpayers prepare their income taxes. In "Tax Heaven 3000," players interact with anime love interest Iris (it's like IRS), and run through a series of questions that complete their taxes. Iris also warns the player to stay away from tax-preparation companies like TurboTax.

Type out a tone and play it back with this fun game

Compose an original piece of music from your phone or desktop with this simple, super fun interface: Just start typing, discover the various sounds associated with each key or letter, and then press play. Go back, tweak, delete, and revise to your...

See a gallery of the early years of CES

This gallery showcases rare photos from the early decades of CES, featuring early personal computers and the first handheld cassette players. See how the world’s biggest tech show began and grew.

Explore interactive simulations of strange attractors, the graphs that help visualize chaos

Although simple, linear equations reach an explicit value for a given input, such as *f(x) \= x* + 1 equaling 4 when *x* equals 3, some chaotic, nonlinear systems tend to evolve towards multiple values simultaneously. These simulations allow users to observe the unusual mathematical artifacts created by systems as their outputs evolve toward these distinct values.

Explore a visual history of the Windows operating system

Named after the windows that separate different applications, the operating system’s first version came preinstalled with Calculator, Paint, and Reversi. There was no Windows 9 to avoid compatibility issues with legacy code searching for Windows 95 and 98 files via a “windows9” query.

Among the smallest mass-produced mechanical calculators in history, the Curta was designed by Austrian engineer Curt Herzstark while imprisoned in a Nazi concentration camp during World War II.

See if you can maintain a perfect credit score with this game.

Explore graphics processing unit benchmarks for 2026, led in performance by Nvidia's GeForce RTX 5090, with AMD's Radeon RX 9060 XT 8GB and Nvidia's GeForce RTX 5060 providing the best 1080p performance per dollar.

Use this interactive calculator to see if you could rebalance the federal budget by adjusting taxes and spending.

Calculate the value of a paper savings bond

An IRS tax refund is the only way to buy a paper savings bond, but if you have an old paper savings bond you can determine its current value with this calculator. The calculator only works for paper savings bonds of Series EE, Series I, Series E, and savings notes.

Slick interfaces and bundling helped solidify Excel as the corporate planning tool

First initiated in the 1980s, the Excel spreadsheet built off predecessors like Lotus and VisiCalc, leveraging a novel graphic interface to entice new customers and packaging the program with other Microsoft Office products. Forty years later, the tool faces challenges from Google and AI, but retains devoted users.

Try counting like the Maya in this interactive math game

The Maya numerical system used dots for 1, bars for 5, and a shell symbol for zero. This interactive resource lets users practice counting with the Maya base-20 system using the same symbols once common in the Yucatán.

Play an incremental game that teaches the history of particle physics

Developed during the CERN Summer Student Webfest 2014, this game tasks you with building the reputation of your particle accelerator as you discover particles and hire staff to collect data. A historical breakdown accompanies each discovery, allowing you to recreate the timeline of the field.

Explore an interactive visualization of greenhouse gas emissions from 745 million sources worldwide.

Explore a simulation of the greenhouse effect

Investigate how cloud cover, surface albedo—a measure of a surface's reflectiveness—greenhouse concentrations, and atmospheric layers affect the energy balance on a simulated planet. Using either the wave or particle models of light, users can also explore how changes in solar intensity affect planetary surface temperature.

Tetris was launched in the US at Summer CES 1988

Tetris first appeared in the US at the 1988 Summer CES, where Henk Rogers—who would later publish and market the game—first encountered it. This interview revisits that moment, with creator Alexey Pajitnov and Rogers reflecting on how the game gained global recognition.

The first smartwatch was made by Microsoft in 1994

Coproduced by Timex, the Timex DataLink 150 featured a small LCD screen and could transfer data to and from a Windows PC. Like the Windows XP Tablet that launched in 2002, the smartwatch did not sell well, and both products are considered to have been released before their time.

Explore an interactive periodic table of each element's history, properties, and uses.

On a basic calculator, the keys that start with M, such as M+ and M-, are memory keys that allow users to store and modify a number in the device's memory.

Type any prompt and watch Craiyon—the free AI image generator that began in 2021 as DALL·E mini—turn words into pictures.

Play a game that reveals if investors with a crystal ball make better trades

The "crystal ball" game reveals how well you would do trading stocks and bonds if you could see the front page of the Wall Street Journal one day in advance.

Explore a digital graveyard of over 300 products, services, and devices that have been discontinued by Google, including Chromecast, Google+, and Google Goggles.

The Year 2038 problem is the next potential computer time rollover bug

Many older systems store time as a signed 32-bit integer counting seconds since Jan. 1, 1970. That counter maxes out on Jan. 19, 2038—overflowing into negative time and sending clocks back to 1901, potentially crashing any older software that depends on accurate dates.

Try out an online tone generator, which produces sounds of specific frequencies to help tune instruments, test your hearing, and generate beats by overlapping tones.

More than 2,000 years ago, a hand-powered model of the solar system called the Antikythera mechanism—the oldest example of an analog computer—could predict solar eclipses.

Computex Taipei is Asia’s premier computing and hardware trade show

Held annually in Taiwan, Computex Taipei brings together global tech leaders to debut innovations in processors, GPUs, AI, and next-gen computing—making it a key event for the IT and hardware industry.

Explore hindcasting on climate models published since 1972

Hindcasting tests model forecasts against observational data to determine their accuracy. In this interactive, you can learn about the differences between eight climate models and evaluate them against available climate data.

The Antikythera mechanism: The oldest-known analog computer

A device now considered the world's oldest computer was pulled from a shipwreck more than 120 years ago. Known as the "Antikythera Mechanism," it is now believed to have allowed precise tracking of astronomical positions, and its sophistication overturned understanding of Ancient Greek capabilities.

Ten defining moments at CES through the years

Iconic CES devices like the Apple Newton, CD player, VHS VCR, Sony PlayStation, and Oculus Rift “Crystal Cove” didn’t necessarily seem groundbreaking at the time. Here's a list of some defining moments from the annual show.

Google’s quantum computer completes a 10,000-year task in about 3 minutes

Google used its 53-qubit processor on an extremely difficult problem for traditional computers to simulate to showcase quantum supremacy. IBM later challenged Google’s claim by arguing that its Summit supercomputer could solve the same problem in just 2.5 days using a more efficient method.

Take a virtual tour inside the NVIDIA GA102 graphics processing unit to explore the architecture that enables it to perform over 35 trillion calculations per second.

Watch a microscopic tour of an Intel i486 microprocessor

Released in 1989 for $950, the chip contained over a million transistors on a piece of silicon the size of a postage stamp, much less packed than today’s chips. The layering of components makes the chip resemble a network of structures—not unlike a city—when zoomed in.

IBM developed a benchmark to measure the usable performance of a quantum computer

Dubbed "quantum volume," the benchmark tests how well a quantum computer runs complex tasks. It stops when the computer can no longer correctly select the most likely answers, called "heavy outputs," more than two-thirds of the time.

Meta's Quest and other mixed reality devices can make learning new skills easier

PianoVision utilizes the passthrough visibility of a headset to illuminate which keys to play on a real piano or keyboard, providing an immersive, software-based learning alternative to human instruction. Similar apps also offer virtual model replacements for physical devices, such as a virtual piano, to practice with.

Microsoft's Flight Simulator is one of history's longest-running software products

The program originated from a master’s thesis project on generating three-dimensional graphics, which was later combined with flight equations. The first version ran on the Apple II in early 1980, but its creator licensed the program to Microsoft two years later,