CD4027 Dual JK Flip-Flop IC (DIP-16)

A JK flip-flop extends what a simpler D-type flip-flop like the CD4013 can do by adding a genuine toggle mode alongside set and reset, which makes it especially well suited to building counters and frequency dividers directly in hardware logic. The CD4027 packs two of these JK flip-flops onto one CMOS chip, useful for building a basic binary counter stage, a divide-by-two clock circuit, or any sequential logic design that specifically benefits from a JK flip-flop's extra toggle behavior over a plain D-type. Alongside the CD4013 and CD4017 already common in this catalog, it rounds out a practical set of CMOS sequential logic building blocks for hardware-only digital design projects.