This circuit uses uncommon Texas Instruments components today. The circuit is from an American documentation. Transistors are commonly used PNP. The display is 7 segment multiplexed.
An stable multivibrator with 50% of duty cucle can be mounted using the 555 as shown by the...
This circuit uses a Norton operational amplifier to generate 1 kHz pulses with a 1 to 60...
This circuit, with a configuration like to many that we can find in this section, was suggested by a...