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1 SN74390 DUAL 4-BIT DECADE AND BINARY COUNTERS 914K TI 4490213
2 SN74390 DUAL 4-BIT DECADE AND BINARY COUNTERS 1180K TI 2451152
3 SN74390N DUAL 4-BIT DECADE AND BINARY COUNTERS 914K TI 4490212
4 SN74390N DUAL 4-BIT DECADE AND BINARY COUNTERS 1180K TI 2451151