Calculator Eleven CDB1401-BK black basic desktop calculator with 14-digit display

Eleven CDB1401-BK black basic desktop calculator is a compact, easy-to-use device for everyday arithmetic tasks. It features a 14-digit LCD display and standard keys for addition, subtraction, multiplication, division, percentage and memory operations. Designed for general office, home accounting and study use, the calculator provides a clear numeric readout and straightforward controls that suit routine calculations and budgeting tasks.

Advantages

The calculator combines a large 14-digit display with a compact footprint, making it suitable for desktop placement without occupying much space. Standard mathematical and memory functions ensure compatibility with common accounting and study workflows, while the tactile keys deliver reliable input. Its simple design and clear output reduce input errors and speed up repetitive calculations.

Suitable for

• General office arithmetic and bookkeeping
• Home budgeting and personal finance calculations
• School and study tasks requiring basic arithmetic
• Quick on-desk calculations during meetings or planning

Key specifications

• Display: 14-digit LCD numeric display for large, clear figures
• Functions: addition, subtraction, multiplication, division, percentage, memory operations (M+, M-, MR, MC)
• Form factor: desktop design with angled keypad and display for easy viewing
• Color: black housing with contrasting key legends for legibility
• Power: battery and/or solar hybrid power source (typical for basic desktop calculators)

How to use

Place the calculator on a flat surface within comfortable reach and angle it so the 14-digit display is clearly visible. Use the numeric keypad to enter figures and the mathematical operation keys to build calculations in the usual order. Use the percentage key for percent-based computations and the memory keys to store or recall intermediate values. Clear entries with the clear or all-clear key as needed and replace batteries according to the manufacturer’s guidance to maintain consistent power and display performance.

Usage recommendations

For reliable daily use, keep the calculator on a stable surface, avoid exposure to direct sunlight for extended periods, and store it in a dry environment. When performing long sequences of calculations, use the memory functions to reduce input errors. Check batteries periodically and follow safe disposal practices for used cells.