Apple-1 Related Parts

ACI 74LS74 Dual D-Type Flip Flop

Spec Sheet
ACI%2074LS74%209LS74%20Fairch%20real%20NTI

Fairchild

From a photo of a real NTI Apple-1 ACI card.
9LS74/74LS74PC. 7633 date code.
Total # on board: 1.

ACI%2074LS74%20NS%20real%20SCC

National Semi

From a photo of a real SCC Apple-1 ACI card.
DM74LS74N, old NS logo, ‘550 date code.
Total # on board: 1.

ACI%2074LS74%209LS74%20Fairch%207519

Fairchild

9LS74PC, 7519 date code.  Stretched “F”.

ACI%2074LS74%20NS%20911

National Semi

Newer NS logo, ‘911 date code.