All machines are functional.

Two (2) Sharp EL-1750V
12-digit capacity: Allows for calculations with large numbers.
Two-color printing: Prints positive numbers in black and negative numbers in red, improving readability.
Large LCD display: Provides clear visibility of calculations.
Professional keyboard: Designed for quick and accurate data input.
Cost-sell-margin keys: Facilitates profit margin calculations.
Change calculation: Functions as a cash register, calculating change owed.
Clock and calendar: Displays the date and time.
Dual power: Operates on AC power or four AA batteries.
Microban protection: Antimicrobial protection inhibits the growth of bacteria.
Two-color ribbon: Uses a ribbon for printing.

Two (2) Sharp EL-2630PIII
12-Digit Display: A large, 17-millimeter, blue fluorescent display ensures easy readability.
Two-Color Printing: Prints positive numbers in black and negative numbers in red for clear distinction.
Fast Printing: The 4.8 lines per second ribbon printer allows for quick and efficient documentation.
Clock/Calendar Function: Prints the date and time on each receipt, aiding in record keeping.
Professional Keyboard Layout: Includes a left-side total key and features like markup, percent changes, and automatic discounts.
Memory Functions: Features a 4-key independent memory.
Other Functions: Includes change sign key, average key, double-zero key, grand total key, and more.
Compact Design: Suitable for desktop use in an office setting.
Power: AC powered.

Sharp EL-2196BL
Large, Easy-to-Read Display: The 12-digit display is designed for clear viewing and to prevent reading errors.
Fast, Two-Color Printing: The printer operates at 3.7 lines per second, providing quick and legible documentation in both black and red.
Professional Keyboard Layout: The keyboard is designed for efficient and accurate data entry with a left-side total key.
Built-in Functions: The calculator includes a variety of functions such as tax calculation, cost/sell/margin calculations, item counter, grand total, and MU (markup) functions.
4-Key Independent Memory: This feature allows you to store and recall frequently used numbers for faster calculations.
Other Features: The EL-2196BL also includes features like a change sign key, average key, double-zero key, and a constant calculation function.
Microban Antimicrobial Protection: This helps prevent the growth of microbes and bacteria, reducing odors and discoloration.
Clock and Calendar Functions: The calculator can also display the date and time.
AC Powered: The calculator is powered by a standard AC outlet, eliminating the need for batteries.

Monroe ClassicX
The Monroe Classic is a heavy-duty, 12-digit printing calculator known for its "velvet touch" keys (also called Individual Keyswitch Technology or IKT) and reliability, making it popular among accountants. It features a sturdy build, an enclosed paper roll to prevent dust and dirt buildup, and an indicator lamp to signal active calculations. The calculator also offers features like automatic total print above the tear-off knife, hidden storage for a spare paper roll and ribbon, and independent multiplication and division capabilities. It's a descendant of the original Monroe Classic, which was reintroduced to meet customer demand for features like dual independent memory and basic loan calculation capabilities.
Individual Keyswitch Technology (IKT): Provides a smooth, responsive key touch, enhancing the user experience.
Enclosed Paper Roll: Protects the printer from dust and dirt, ensuring longevity and reliable operation.
Automatic Total Print: Prints the total directly above the tear-off knife, making it easy to see and tear off the paper.