. "4000-series integrated circuits" . "4000 series" . . "4000-series integrated circuit" . "4000-series integrated circuits#4511 BCD to seven-segment decoder" . . "4000" . "CD4000" . "4000-series integrated circuits" . . "CMOS" . "4000-series" . . . "14000-series" . "4000-series integrated circuits#4017 decade counter" .