N82S131N Signetics 2K-bit TTL Bipolar PROM (512x4) DIP16

N82S137AN Signetics 4K-Bit TTL Bipolar PROM DIP18

N82S129AN Signetics 1024-Bit Bipolar PROM (256x4) DIP16

DM87SR27N NSC 4K Bit REGISTERED TTL PROM DIP22

4 X 74LS191N SIGNETICS 4Bit UP/DOWN BINARY COUNTER 16-PIN DIP SIGNETICS NEW IC

5 x 74S86N SIGNETICS Quad Two-Input Exclusive-OR Gate 74S86 SN74S86N IC

1 x 82S191 Military CERAMIC SIGNETICS 2048x8 Field Programmable Bipolar PROM IC

SIGNETICS NE5018N, DIGITAL to ANALOG CONVERTER 8-BIT, USED