74181: Arithmetic Unit

This is a versatile arithmetic element. It may be used to add, subtract, or shift two 4-bit words, make magnitude comparisons, perform numerous other arithmetic operations, and generate logic functions. It is normally used as the central processing unit for a computer. As many stages as needed are cascaded.

Refer to data sheet for more information.

Pinout
Pin # Pin Assignment
1 Input B0
2 Input A0
3 Input S3
4 Input S2
5 Input S1
6 Input S0
7 CN
8 M
9 Output F0
10 Output F1
11 Output F2
12 Ground
13 Output F3
14 A = B
15 P
16 CN + 4
17 G
18 Input B3
19 Input A3
20 Input B2
21 Input A2
22 Input B1
23 Input A1
24 Power (+5V)

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