2025 One Hertz Test: Four-Function Frequency Measurer
In a world where technology is constantly evolving, it's refreshing to see a project that harks back to the basics. Enter Jacques Pelletier's four-function frequency counter, a device built using classic, old-school electronics.
This humble yet capable counter is a four-function unit, capable of acting as a frequency meter, period meter, chronometer, or a basic counter. Its construction, thoroughly old-school, focuses on simplicity and minimal reliance on advanced technology.
The heart of this frequency counter lies in raw CMOS logic chips. Specifically, 4553 BCD counter chips and 4511 decoder ICs are used to handle counting frequency in binary-coded decimal and convert the output to drive 7-segment LED displays showing red digits inside a traditional project case.
The sample timing for this counter is derived from an 8 MHz oscillator and can be set to either 1 Hz or 0.1 Hz sample times. This build exemplifies how useful devices can be made with fundamental digital logic components alone.
Interestingly, the construction of the frequency counter does not rely on code or RAM, nor does it involve microprocessors or microcontrollers. Instead, it primarily uses CMOS chips, making it an entry into the 2025 One Hertz Challenge.
Building this frequency counter can be accomplished with a limited amount of technological resources. It was started a long while ago when electronic parts were still available in local stores, demonstrating that with the right approach, even complex devices can be built with basic electronic components.
This project serves as a reminder that sometimes, going back to basics can lead to remarkable results. Jacques Pelletier's frequency counter is a testament to the power of simple, old-school electronics in a world dominated by microprocessors and microcontrollers.
This project, a four-function frequency counter built by Jacques Pelletier, showcases the utility of basic digital logic components, eschewing the need for microprocessors or microcontrollers often found in modern technology. Instead, it primarily utilizes CMOS chips, a reminder that even complex devices can be crafted with minimal technological resources.
