The calculator had no display, but the keyboard was decorated with an image of an owl with two large eyes, one green and one red. Children entered both a problem and their answer to it. If the answer ...

The calculator in question is a Sinclair Cambridge, the arithmetic-only predecessor to the Sinclair Scientific we tore down, and judging by the date code on its display driver chip it dates from ...

High-resolution LCD shows more of your work to minimize scrolling Advanced calculations let you quickly work through multi-step problems Online Visualization provides fast representation of data ...

It looks great, and it’s the basis of an all-vacuum tube calculator. The core of this build are a few tiny NE-2 neon bulbs ... a real seven-segment display, a plus or minus sign, and an ...

This function positions the cursor in order to modify an individual character, or to scroll the display window left or right to reveal additional data stored in the DD RAM, beyond the 16th character ...

This calculator can be purchased at School Health currently and features a high resolution, 7″ four-line color display and selectable ... It added and subtracted two numbers directly and couple ...

This personal loan calculator will help you determine total ... An easy way to multiply by a percentage is to multiply the two numbers (for example, $1,000 x 1.25) and then divide by 100.

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Use our mortgage calculator to estimate your monthly house ... a fixed-rate $250,000 loan at 7.2% (for the remainder of the price), property taxes of $2,188 per year, and homeowners' insurance ...