4055
BCD to 7-segment decoder/LCD driver.
The po (phase) output should be connected to the backplane of the LCD.

    +----------+
 po |1  +--+ 16| VCC
 A2 |2       15| YF
 A1 |3       14| YG
 A3 |4       13| YE
 A0 |5  4055 12| YD
 pi |6       11| YC
VEE |7       10| YB
GND |8        9| YA
    +----------+

[This information is part of the GIICM]