Labels:text | diagram | plan | font | line OCR: 8-BIT STEREO MONO SOUND OUTPUT FROM YOUR PARALLEL PORT(S) THIS DESIGN BY DAVE BOYD (Version 1.90) Addition to V1.00 boord that adds support for the Stereo-on-2 format. Refer to the README,IST for information regarding the use of this schematic. TO DB-25 CONNECTOR 20 PIN # G VCc 20 9 LA1 74HCT1Y1 19 1A2 244 1YEL 18 VV 8 FLA3 16 7 6 1A4 4.7K 5 72A1 VVV 11 4 22A2 2Y2 1M 3 15 -243 2Y3 2 17 PA4 2Y4 13 DSC TRG 555 RST GND 25 ) THE OUT CV 0.1uF .01 uF" 100uF 2N3906 20 20 3 4 7 MVM 8 41 40 16 13 13 12 12 14 17 70 15 15 74HCT373 16 18 11 18 13D 19 11 DE END TO 74HCT373 10 10 5 1/6 74HCT04 Mono/ SOCKET FROM 74HCT373 Stereo-on-1 10K 1/6 74HCT04 SOCKET Stereo-on-2/ O- Stereo-on-1 1 1/6 74HCT04 Copyright 1994, Dave Boyd Note Or All IC/'s must have o 1 uF decoupling capacitor connected across their powe ...
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