MM74HC4040MX Logic IC - SO16 - National Semiconductor - NSC

DM74LS670M Logic IC - SO16 - National Semiconductor - NSC

74LS109A Logic IC TTL - SO16 - National Semiconductor - NSC

MM74HC123AM Logic IC - SO16 - National Semiconductor - NSC

DM74S473AN Logic IC - DIP20 - National Semiconductor - NSC

DM74LS20N Logic IC - DIP - National Semiconductor - NSC

DM74LS279N Logic IC - DIP - National Semiconductor - NSC

DM74LS283N Logic IC - DIP - National Semiconductor - NSC