Electronic calculator system having audio messages for operator interaction
Patent 4060848 Issued on November 29, 1977. Estimated Expiration Date: November 29, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
A calculator system is provided using a stored program data processor and an audio message subsystem to process digital information and to provide audio messages for operator interaction. The calculator system utilizes a digital data processor to execute program routines to process digital information and to communicate with an operator using audio messages. Digital message information is stored in a digital memory and is accessed in response to operator generated signals to provide audio messages.