Four-Bit single-chip Microcontrollers with 8, 12, and 16 KB of On-chip ROM 四位单芯12微控制器,和16 KB的片上ROM Advanced LinCMOS(TM) Rail-To-Rail Quad Operational Amplifier 14-TSSOP 0 to 70 Four-Bit single-chip Microcontroller with 16 KB of On-chip EPROM Four-Bit single-chip Microcontrollers with 4 6 8 12 and 16 KB of On-chip ROM Four-Bit single-chip Microcontrollers with 4 6 and 8 KB of On-chip ROM 4-bit Microcontroller with Built-in PROM