Bistable 555 - 8-bit computer clock - part 3

Our computer's clock is built using several 555 timers. The second is configured as a bistable multivibrator to debounce the toggle switch for selecting between the clock oscillator and manual clock stepping. See eater.net/bbcpu8-clock-module for more.
Part 1: • Astable 555 timer - 8-...
Part 2: • Monostable 555 timer -...
Part 4: • Clock logic - 8-bit co...
Support me on Patreon: / beneater
You can get all the components used in this video from any online electronic components distributor for a few dollars.
Complete parts list (everything in this video):
- Circuit from parts 1 and 2
- 1x 555 timer IC
- 2x 1kΩ resistors
- 1x 330Ω resistor
- 1x 0.01µF capacitor
- 1x Double-pole toggle switch
- 1x LED
- 22 gauge wire

[@storyls]

3 episodes in and I am getting the vibe that whenever there is a problem, you just add a triple 5.

[@skillfulfighter23]

For anyone who buys Ben eater's kits, you need to buy "break before make" switches. The included switches are "make before break." This causes the bistable circuit to not debounce at all. Took me a whole week to figure this one out.

[@whiskyguzzler982]

One of the core concepts that is hard for folks used to working in analog electronics is the pull-up resistor. Imagine dimming the lights for a romantic evening by turning on the hairdryer. It’s like that…

[@abdoabdo-fr1gy]

Please translate to Arabic

[@CrunchyMush]

I've seen someone debounce a switch just by putting a cap across the contacts. Is there a reason why the approach using a 555 is better?

[@ninovitaliano7943]

Cant you use a capacitor to debounce

[@cchimozmin]

Switches, which is ….

[@jonah1077]

I'm trying to recreate this computer in Minecraft with 0-tick repeaters, so far everything is identical. Wish me luck!

[@kennethchristian4274]

Does voltage between the two modes matter? For instance, my async has an output of 1.7V, while my manual has 2.6V.

[@paulbaker916]

Just discovered your brilliant videos. I've allegedly learnt this type of thing at college & university but only now do I feel I'm really understanding it. You have been added to a small list of superb KZbin channels that are changing the way we educate. Thanks.

[@PixelSergey]

To anyone that has bought Ben's timer kit: the switch provided there is a make-before-break switch, as opposed to a break-before-make! However, there is an easy solution to fix this.

[@vaibhavhayaran]

Break before make and make before break another subdivision of switches...... 4 years of electronics engineering and absolutely nobody in the college ever told me about this... His every video has something new to learn ❤️

[@ebsolas]

Just wanted to thank you for this. I decided to try building a computer in Minecraft so I can better understand how they work, so this video series is a godsend. I already got the 555 timer working (though for the actual I'll use a hopper clock) so it was good to understand how they work.

[@sunergi]

I love these 555 1-2-3 part videos, I'm just starting to learn electronics deeper and these videos helped me way lot better than other channels.

[@kampkrieger]

thats genius, with the 3 super real examples <3

[@lucamorini4072]

Thank you Ben for your precious work! I have just finished to study all your 44 video ! Everything is perfect made . I didn’t know anything about Fetch or Register or whatever and now I can understand the elementary way a computer works. Thank you! I bought the package to build it , I can’t wait to receive it! 🙏🏻👍🏻

[@kjamison5951]

Wonderfully described videos! Clear precise instructions! If I was still working in education, I’d be showing your videos to students.

[@spencercollins217]

Thank you so much for making this video series it has increased my understanding of electronics immensely.

[@johnnyserup5500]

You are so good at explaining - it is a joy to watch

[@darwinvinci7744]

I want to pay all my college tuition fee to Ben !