4510 4-bit synchronous binary up/down counter with asynchronous load, reset and ripple carry output. +----------+ LD |1 +--+ 16| VCC Q3 |2 15| CLK P3 |3 14| Q2 P0 |4 13| P2 /RCI |5 4510 12| P1 Q0 |6 11| Q1 /RCO |7 10| UP//DN GND |8 9| RST +----------+ [This information is part of the GIICM]