In this blog a stopwatch is simulated in Multisim and converted to a PCB layout via Ultiboard
Build of material:
- Two 7 segment displays
- Resistor packs (100 Ohms) *included in updated model
- Two 74ls190 (up/down counters)
- Two 74ls47 (BCD decoder)
- 555 Timer (1MHz digital clock in Multisim)
- One toggle switch (up/down)
- 1 Tact push button switch (reset)