[Ziggurat29] had been playing around with infrared protocols, and realized he had a spare point-of-sale printer kicking around in his junk box. So he decided to whip up his own calculator infrared ...

In the course of the 1970s, handheld electronic calculators transformed the way tens of millions of people did arithmetic ... Museum of American History Texas Instruments TI Programmable 59 Handheld ...

In the course of the 1970s, handheld electronic calculators transformed the way tens of millions of people did arithmetic ... Museum of American History Texas Instruments TI Programmable 59 Handheld ...

F2C 58mm Thermal Bluetooth Receipt Printer Portable Mini Wireless (Bluetooth Printer) Thermal USB Receipt Printer with 2600mAh Rechargeable Battery, Compatible with Mobile Android (CX588V1) ...

It was the fall of 1965 and Jack Kilby and Patrick Haggerty of Texas Instruments sat on a flight as Haggerty explained his idea for a calculator ... developed a thermal printer that burned images ...

Use this free savings calculator to understand how your money can grow over time. When you put money in a savings account, the interest you earn builds on itself.

Use this free mortgage calculator to estimate your monthly mortgage payments and annual amortization. Property taxes The annual tax that you pay as a property owner, levied by the city ...

If you’ve ever wondered how much of your monthly payment will go toward interest and how much will go toward principal, an amortization calculator is an easy way to get that information.

Check the currency rates against all the world currencies here. The currency converter below is easy to use and the currency rates are updated frequently. This is very much needed given the ...

The controls on the printer itself are another question, though: A calculator-style text display and a frustratingly button-press-button-press-button-press menu system will likely leave you ...

More affordable than ever, 3D printers are booming for personal, professional, and educational use. Here's everything to know before you buy one, along with the top models from our hands-on testing.

Our mortgage calculators are free to use — no ifs or buts. You can find the right mortgage calculator on this page and click through. You'll be asked to enter some details to get the answers you need, ...