A calculator system with visual and speech outputs uses a single monolithic LSI chip which includes: a single ROM containing program instructions for both system and speech control, as well as data for synthesizing speech; a central controller which calculates both inputted data and program execution data to control the system, and a RAM used by the central controller in manipulating data.
A plurality of buzzer sound data obtained by converting different types of intermittent buzzer sounds to numerical values is stored in a buzzer source data memory. Coded data received from a host apparatus by a receiver is decoded by a receiver. A decoding result is stored in an index register. The buzzer sound data is read out from the buzzer sound data memory in response to the decoding result data in accordance with the instruction supplied from the host apparatus through a readout. The intermittent buzzer sounds corresponding to the readout buzzer sound data are produced by a buzzer unit.
This invention relates to a digital sound data storing device wherein analog sound data is synthesized from digital sound data. The device includes a case and an IC card detachably attached to the case. A plurality of digitized sound data groups are stored at a built-in memory of the IC card. The digitized sound data groups are obtained by recording sentences for foreign language conversation practice through a microphone to thereby obtain analog sound signal which is converted to digital sound signal. When the IC card is attached to the case, a signal processing circuit operates to read out the digital sound data group, which is converted to the analog sound signal. The analog sound signal is supplied to an amplifying circuit and reproduced as sound.
