People use printing calculators because they create a physical paper trail of every number and calculation that’s entered. Having a hard copy for things like finances allows professionals like accountants, business owners and clerks to easily cross-check numbers, spot errors and maintain thorough records and accounting journals without having to solely rely on laptops and desktop PCs.

To load your printing calculator, start by removing the printer cover and cutting a clean, straight edge on the paper roll with scissors so it’s easier to feed through. Next, place the new paper roll in the metal or plastic holder so the loose end unfolds from the bottom. Insert the paper into the slot at the back of the printer mechanism and press the Feed or Paper Advance key until it feeds through the top of the calculator. When that is finished, you can put the printer cover back on.

A printing calculator has a built-in mechanism that prints every number, equation and total on a physical roll of paper. This allows you to have a paper trail of every number and calculation that’s entered for personal and business records. A basic calculator only shows numbers temporarily on an electronic screen. Numbers must be handwritten in a notebook, journal, or on copy paper, or entered digitally in a tablet, smartphone or computer.

Printing calculators are a traditional and important tool for accounting work. They create a physical paper trail that can be used to verify numbers, fill out accounting journals, balance books, file taxes with tax software and staple records to documents or invoices for audits. Printing calculators can also have built-in keys for tax calculations, item counts and cost-sell-margin functions to help simplify business math.