7457
Frequency divider.
Can generate one second timing pulses from 60 Hz.
Two '57 devices may be interconnected to give frequency division of 3600 to 1,
1800 to 1, 900 to 1, etc.
Features a reset pin that is common to all three counters.

     +----------+
CLKB |1  +--+  8| QC
 VCC |2        7| QB
  QA |3  7457  6| RST
 GND |4        5| CLKA
     +----------+

[This information is part of the GIICM]