Timing learning language machine for boby
A learning machine, technology for infants and young children, applied in the field of language learning aids, to achieve the effect of effective development
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[0012] The present invention is further described below by implementing examples.
[0013] The central processing of this language timing learning machine is the heart of the whole device, see figure 2 shown. There are 2 high and low crystal oscillator circuits, 4 input and output ports, 2 input ports, 24 address lines, and 16 data lines. The central processing unit U1, that is, the 32-bit CPU uses the SIC33209 chip. It starts the language learning program according to the time set by the timer 2, and outputs the language signal through the PWM MAIN and PWM SUB pins.
[0014] The voice output circuit of this language timing learning machine is the playback circuit 3 such as image 3 shown. R14, R15, R16, C23, R17, R18, C24, R19, R20, C25, C26, U4A, R21, and C28 in the figure form a low-pass filter with a sampling frequency of 16KHz. C29, R22, R23, R24, C30, C31, U5 form a power amplifier circuit, and finally the LS1 speaker plays the prompt voice. R24 / R22 is the power am...
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