The Sharp EL-1901 is a desktop printing calculator designed for business and office use. It features a 12-digit fluorescent display for clear number visibility and a built-in 2-color ink roll printer that prints positive values in black and negative values in red, making it easy to review calculations at a glance.

Key features include cost/sell/margin calculations for retail and business applications, tax calculation with programmable tax rate, a grand total key, and a check and correct function that allows entry verification before printing. The calculator also includes percent, square root, and memory functions. It operates on standard AC power and is compatible with replacement ink rolls and paper rolls.