Lightning Mechanical Calculator (1908) Models on Display:Lightning Calculator 25-inch floppy drive into a

25-inch floppy drive into a single compact chassis

To compensate for these primitive graphics

making it the ultimate mid-2000s workout accessory

and today it remains a centerpiece for collectors of Charles Schulz memorabilia

Lightning Mechanical Calculator (1908) Models on Display:Lightning Calculator 25-inch floppy drive into aLightning Calculator The Lightning Adding Machine, first produced in 1908, was a popular and affordable desktop calculator that became a staple for small business owners for over half a century. Unlike the heavy, ultra expensive computing machines used by massive corporations, the Lightning was a lightweight, wedge shaped gadget that operated using a simple metal pointer, or stylus. To add up numbers, a merchant would insert the pointer into one of