Computer and telephone apparatus with user friendly interface andenhanced integrity features

A telephone configures as a programmable microcomputer (telephone-computer) which operates in most circumstances through a standard telephone 12-key keypad input. The telephone-computer has the overall appearance of a telephone and includes telephone electronics and a microprocessor unit operated in conjunction with other computer elements, including memory devices, a programmable gate array (PGA) chip which can be initially programmed and then fixed, and enhanced integrity features. The PGA has the capability of being configured to accommodate various types of software which require different hardware Configuration, but without actually reconfiguring the hardware. The telephone-computer delivers data processing capabilities and services through an ordinary telephone instrument via conventional telephone lines with a network host computer which communicates with a vast panoply of service bureaus. Specifically, operating software is downloaded to the telephone-computer by the network host computer to format the microcomputer to conform to the software format used by the service bureaus.