| No | Part number | Description ( Function ) | Manufacturers | |
| 4 | SP0256 | AN EXCLUSIVE RADIO SHACK SERVICE TO THE EXPERIMENTER
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 ETC |
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| 3 | SP0256 | Electrical Characteristics
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 General Instrument |
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| 2 | SP0256 | Speech Board Interface The SP0256 Speech Board Interface William Henderson April 17, 2005 1 Interface Details This documents the interface between the SP0256 Speech Board and the TINI TutorIO microprocessor board. The TutorIO board PIA connector is a 26-way IDC socket known as CONN3. This carries the signals of the three 8-bit Ports A, B and C, ground and Vcc (5V). Only Port A |
ETC |
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| 1 | SP0256B | Narrator Speech Processor w w a D . w S a t e e h U 4 t m o .c w w .D w t a S a e h U 4 t e .c m o w w w .D a S a t e e h U 4 t m o .c |
 Microchip Technology |
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List of most widely used semiconductors
| Part Number | Function | Manufacturers | |
| 1N4007 | The 1N4007 is a rectification diode that is designed for high-voltage applications, typically up to 1000V. It has a maximum current rating of 1A and a forward voltage drop of around 0.7V. |
 Vishay |
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| LM317 | This is a popular adjustable voltage regulator. |
 ON Semiconductor |
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6N137 | LM393 | 2N3906 | 2N2222 | TIP120 | 1N5818 | LM324N | A1015 | SMAJ20CA |
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