This circuit is from the 1983 Intersil Databook. The display is plasma and must be excited by a high voltage circuit. The components used in this configuration are not common today.
The traditional circuit was taken from a French magazine Radio Plans that no longer exists but can...
This monostable circuit, from a 1977 Radio Shack documentation, uses a 7400. The time is given by the...
The circuit shown in the figure activates a small indicator lamp that will start to flash when the...