i[data] sn74ls37 quad 2-input positive-nand buffers ti[data] sn74ls38 quad 2-input positive-nand buffers ti[data] sn74ls40 双4输入端与非缓冲器 ti[data] sn74ls42 4线-10线译码器 sn74ls47 bcd七段译码,驱动器 ti[data] sn74ls48 bcd-to-seven-segment decoders/drivers ti[data] sn74ls49 bcd-to-seven-segment decoders/drivers ti[data] sn74ls51 2路3-3输入,2路2-2输入与或非门 ti[data] sn74ls54 4路2-3-3-2输入与或非门 ti[data] sn74ls55 2路4-4输入与或非门 sn74ls56 frequency dividers sn74ls57 frequency dividers sn74ls68 dual 4-bit decade or binary counters
i[data] sn74ls37 quad 2-input positive-nand buffers ti[data] sn74ls38 quad 2-input positive-nand buffers ti[data] sn74ls40 双4输入端与非缓冲器 ti[data] sn74ls42 4线-10线译码器 sn74ls47 bcd七段译码,驱动器 ti[data] sn74ls48 bcd-to-seven-segment decoders/drivers ti[data] sn74ls49 bcd-to-seven-segment decoders/drivers ti[data] sn74ls51 2路3-3输入,2路2-2输入与或非门 ti[data] sn74ls54 4路2-3-3-2输入与或非门 ti[data] sn74ls55 2路4-4输入与或非门 sn74ls56 frequency dividers sn74ls57 frequency dividers sn74ls68 dual 4-bit decade or binary counters