Saturday, December 19, 2015

Multisim| Stopwatch Timer Cascading 7 Segments 74ls190 74ls47

Stopwatch Timer Cascading 7 Segment Displays

Written by Larsha Johnson
12/19/2015

In this blog a stopwatch is simulated in Multisim and converted to a PCB layout via Ultiboard

Build of material:

  1. Two 7 segment displays
  2. Resistor packs (100 Ohms) *included in updated model
  3. Two 74ls190 (up/down counters)
  4. Two 74ls47 (BCD decoder)
  5. 555 Timer (1MHz digital clock in Multisim)
  6. One toggle switch (up/down)
  7. 1 Tact push button switch (reset)


Snippet for drag and drop coming soon.
*Visit our Git page for free files. https://github.com/Bits4Bots

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