The maximum frequency of this circuit is 500 kHz. We found it in a documentation for radio amateurs from the 1980s. The integrated circuit used is uncommon today.
Atmel's ATmega 324PB microcontrollers available from Mouser Electronics are RISC-based...
This 3-digit thermometer, suggested by Texas Instruments, uses 3 integrated plus the display, with...
A pulse triggers this 800 Hz horn for a time determined by capacitor C1. Powered by 5 V the...