74HC4094 is a string in and out chip. It can be seen as an extension of the IO port of the MCU. The single chip microcomputer only needs 3 IO ports, which can be expanded to 8*N 74...
74HC4094 is a string in and out chip. It can be seen as an extension of the IO port of the MCU. The single chip microcomputer only needs 3 IO ports, which can be expanded to 8*N 74HC4094 IO ports (a 4094 with 8 ports, two with 8*2=16 ports).