Commercial 5V 4-Bit BIDIRECTIONAL Binary Counter IC, TTL/H/L, 20-Pin DIP
Encoder, LS Series, 8-Bit, TTL, CDIP20, HERMETIC SEALED, CERDIP-20
16-Bit D Flip-Flop, TTL/H/L, 5V, 28mA, 35ns, DIP-16
