Schematic FILE  O December 27, 1993 CallID_2.espACall ID Memory and LCDGDrawn by Grant BeattieDRAWN BY GRANT BEATTIEblblblblblblblblvvvvvvvvpppp&EyU427128A+EyCN1 LCD Socketpn\ZnZvnbZ\Z<ZvnvnpnpZData Bus (D0...D7) X@+5v zJ+5vNr"Eyh"Eyf6f^H^f^^^6^^hf^z^zJz^^f^) T,$ &A;EyVR1Contrast"""||*|*r*|DJXJX@XJDhXhXhXr Dh14 DJ28hr| |+5vr",6@6xx<xxAddress Bus (A0...A15)xx A15 A14xxnZxr' [EyU5A74HC006@TT|@TTT' [EyU5C74HC00 (R/W* ,( E ,,6"""^^^6@&0@ff""" (R/W*' [EyU5B74HC00' [EyU5D74HC00'^EyU6A74HC04'^EyU6B74HC04xxxnnxxx A0 A15 A14 &( E &&XJlJXhlhXJXh#bTEEe¼C40u1 +5v b+5vX"Ef¼"Eg¼bbbb'NEyU6C74HC04b7 b147 14 F C000 - FFFF F 4000 - 7FFF (EPROM (LCD27128 DIP SOCKET2 GND POWER GND POWERPOT74HC0074HC0074HC0074HC0074HC0474HC04CAP GND POWER GND POWER74HC04