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Telephone DTMF signal accessible data processor with calculator program

  • US 5,949,857 A
  • Filed: 12/17/1998
  • Issued: 09/07/1999
  • Est. Priority Date: 12/17/1998
  • Status: Expired due to Fees
First Claim
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1. A method of using a data processor having a telephone accessible application program, wherein said application program carries out functions in response to commands received from a telephone, comprising the steps of accessing said application program by telephone, sending a command from said telephone to said data processor to cause said data processor to switch from said application program into a calculator program which responds to commands received from a telephone to carry out mathematical operations, transmitting commands from said telephone to said data processor to cause said calculator program to carry out a mathematical calculation to determine a numerical result, then sending a command from said telephone to said data processor to switch said data processor from said calculator program to said application program, and using said numerical result in said application program.

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