XTAL oscillator with fine tuning (CB22403E)

We found this circuit in an old English documentation. The integrated circuit is of a specific type of the time.

Coded Actuator (CB16288E)
Only those who know the secret activation code will be able to turn on the device connected to...
Two-tone solar buzzer (CB20493E)
This circuit was found in a 1991 publication. The transistor can be a general-purpose type....
Divider by 8 (CB12982E)
A frequency divider for digital signals can be constructed based on a single 4018 integrated...