Calculator

A calculator is a device for performing numerical calculations. The type is considered distinct from both a calculating machine and a computer in that the calculator is a special-purpose device that may not qualify as a Turing machine. Although modern calculators often incorporate a general purpose computer, the device as a whole is designed for ease of use to perform specific operations, rather than for flexibility.

External links

• On TI's US Patent No. 3819921 – From TI's own website
• 30th Anniversary of the Calculator – From Sharp's web presentation of its history; including a picture of the CS-10A desktop calculator
• Online Calculators and Converters
• Online Calculator Software
• Online deep space SETI range calculator
• JavaScript Scientific Calculator – Scientific notation, hex, octal, decimal, binary, and math functions; requires JavaScript (from ostermiller.org)
• The Old Calculator Web Museum
• Calculator Museum
• Museum of Soviet Calculators
• Soviet Calculators Collection
• Vintage Calculators
• various calculators
• Broken Calculator
• GraphCalc – an Open Source graphing calculator program
• HiDigit scientific calculator
• The Museum of HP Calculators (slide rules/mech. section)
• HP Calculator Wiki