7451 Dual AND-OR-INVERT Gate

Spec Sheet
7451%20Fairch%20real%20pre NTI%20A1

Fairchild

From a photo of a real pre-NTI Apple-1.
7451 PC F, black plastic.
7537 date code.
Total # on board: 1.

7451%20Sig%20real%20NTI%20A1

Signetics

From a photo of a real NTI Apple-1.
Vertical labeling, black plastic, block “S” logo, additional S below part number.
Total # on board: 1.

7451%20Fairch%207623

Fairchild

7451 PC F, black plastic, 7623 date code.  On my Mimeo replica.

7451%20Fairch%207349

Fairchild

9N51/7451 PCF, black plastic. 7349 date code.

7451%20Sig%207645

Signetics

Vertical labeling, black plastic, block “S” logo, no added S. 7645 date code.

7451%20Sig%207342

Signetics

Vertical labeling, black plastic, block “S” logo, no added S. 7342 date code, almost exact date code match to the real Apple-1.