DM74S188 is (32 x 8) 256-BIT TTL PROM manufactured by National Semiconductor.
| Part Number | Description |
|---|---|
| DM74S181 | ARITHMETIC LOGIC UNIT/FUNCTION GENERATORS |
| DM74S182 | LOOK - AHEAD CARRY GENERATORS |
| DM74S132 | Quad 2-Input Schmitt Trigger NAND Gate |
| DM74S157 | QUAD 1 OF 2 LINE DATA SELECTORS/MULTIPLEXERS |
| DM74S158 | QUAD 1 OF 2 LINE DATA SELECTORS/MULTIPLEXERS |