常用芯片手册

硬件开发常用的芯片手册，包括74HC00,74HC02,74HC03,74HC04,74HC05,74HC08,74HC11,74HC14,74HC20,74HC27,74HC30,74HC32,74HC34,74HC42,74HC51,74HC58,74HC73,74HC74A,74HC75,74HC76,74HC85,74HC86,74HC107,74HC109A,74HC112,74HC113,74HC123A,74HC125,74HC126,74HC132,74HC133,74HC137,74HC138,74HC139,74HC147,74HC148,74HC149,等，74ls系列，ULN2008等