List of 7400 series integrated circuits Puns

I have a lot of 7400-series IC's laying around and I would like to make some interesting projects out of them. Anyone got some ideas?

Hi, is anyone able to answer any of these questions about 7400 series based on ttl and 4000 series based on cmos. Would really appreciate

a) minimum and maximum power supply voltages

b) voltage levels corresponding to Logic ‘O’ and Logic ‘1’ levels

c) power consumption per gate and/or integrated circuit

d) propagation delay, explaining what it is and its significance

e) fan-out, explaining what it is and its significance

Hello, I am working on a small project making a D Flip-Flop from 7400 series logic ICs.

I have two 555 timers that provide either a de-bounced push button output or an astable clock. The Flip flop is made from 4 NAND gates and 1 NOT gate.

I attached all the schematics I made for my circuit.

The circuit works properly in that when connecting the "D" input to either +5V or ground latches it to the "Q" output on the rising edge of the clock signal.

The issue arises when I connect the "D" input to the "Inverse Q" output. What I suspect should happen is that "Q" and "Inverse Q" should periodically alternate at every rising edge of the clock cycle. Instead what happens is that the LED faintly pulses on as if some voltage somewhere isn't high enough. I suspect maybe there is an issue with the edge detector as changing the 10k resistor seems to have some effect on the faint pulsing.

Although mainly I suspect there is something obvious I'm missing. I'm not really good with electronics or digital logic so any help is appreciated.

https://preview.redd.it/48c3y4u0s0381.jpg?width=4000&format=pjpg&auto=webp&s=85847d5a83c9c404f1d6a21535e20acc13d590e3

https://preview.redd.it/bcompw50s0381.jpg?width=3248&format=pjpg&auto=webp&s=27c6f1cca8f2e6fcec2a0da1e72530595143719f

Technology of the 21st century.

Semiconductors are getting a lot of attention. In conventional semiconductor chips, electrons are used for transmitting and processing signals. We're using Integrated circuits (ICs), or microchips, everywhere. These circuits are essential parts of countless modern technologies from medical devices to smart watches, computers to spacecraft. They consist of a set of electronic components such as transistors, resistors, and amplifiers on a semiconductor wafer. But, this is energy consuming, it requires expensive materials and can't follow higher data speeds needed in the future.

So, what's next? Why not using photons (light) instead of electrons for computing and signal processing? What is faster than light? Much of the functionality of these conventional, Integrated Circuits can be replaced by working with light instead of electrons. To be able to use light, we need a new type of integrated circuit, called Photonic Integrated Circuits (PIC's), with photonic components including lasers (used to generate light signals that represent 0's or a 1's) and waveguides (used to guide light signals) onto a single chip. These PIC's are often also called "silicon photonics", because silicon is used as a medium.

In the beginning this was all prototyping, lots of trail and error, because light isn't as easy as electrons. It has to be reflected using mirrors and guided trough the circuit without unwanted light losses due to absorbing along the way.

During the past 2 decades, our world's smartest engineers have been really busy. Today we have developed fully functional PIC's, already in the market. So, we CAN use light. It's perfectly possible. But why doesn't people know this? That's because the assembly of a PIC is difficult because it requires a lot of labor, it's all hand work, and this manufacturing issue leads to scalability issues and, this make PIC's more expensive (purchase price) than IC's. For example Intel is doing it this way and already shipping high volumes of PIC’s.

But guess what, there has been developed kind of 3D printing techniques. A wafer-scale assembly, with flip-chipping techniques. So these components get flip chipped on a wafer hundreds at a time. These techniques reduce time and costs (-40%) and make PIC's much more attractive. The PIC performance results are superior. Completely outperforming the older PIC's and IC's. This has been done only by POET Technologies so far. Moreso, they use CMOS manufacturing mach

Without a doubt its a been a wild few days. Here are some interesting events I like to share.

>Nvidia on Tuesday unveiled a new version of its GeForce RTX 3080 graphics card with 12GB of memory, a 2GB bump over the 10GB version of the RTX 3080 that came out in 2020. The upgraded 12GB RTX 3080 will be available starting today from Nvidia's partners.

>Jack Dorsey’s BLOCK is hiring Mining Experts. Moreover, according to a recent listing Block is looking to hire a custom digital design lead to join the team that will help build the “next generation” of microchips used to mine coins. In a series of tweets in October 2021, Block CEO Jack Dorsey touched on some of the key features that would be included in the open-source mining system based on custom silicon. “Mining needs to be more distributed. The core job of a miner is to securely settle transactions without the need for trusted 3rd parties. This is critical well after the last bitcoin is mined. The more decentralized this is, the more resilient the Bitcoin network becomes,” stated Dorsey at the time

https://www.reddit.com/r/IntegratedCircuits/

It is also for the physical and industry side of chips, in addition to the computing side.

Whenever you have a hardware-related post, please put a copy to that sub and also subscribe to it.

If this is wrong subreddit to tell about this incoming / nascent chip sub, then what is correct? Criteria should not be that the purviews and sets of topics should be same, but that there should be large overlap or large percentage of users in one sub would be interested about the other. Criteria should be similar to the links in the sidebar and even looser. If it is controversial or up to debate whether the recommended subreddit's purview is sufficiently related to this subreddit's purview, then that question should be left for the users. Let them make up their own mind and we can debate that question here.

Even if this subreddit is meant for discussing computing from a point of view where it does not matter whether the computing is done with special hardware or software in general-purpose CPU, integrated circuits are still a related topic.

So I found this seemingly useful link which lists a lot of ICs by part number. How complete is it?

Hello!

This is something that I've been wondering for a while: usually CMOS IC logic gates have all the same reference no matter who's the company that builds it, for exemple, if I want an IC with NOR gates I know that I have to use the 4001 and I can find this reference either with Texas Instruments or STM.

Why is this? Is this some sort of standar?

Technology of the 21st century.

Semiconductors are getting a lot of attention. In conventional semiconductor chips, electrons are used for transmitting and processing signals. We're using Integrated circuits (ICs), or microchips, everywhere. These circuits are essential parts of countless modern technologies from medical devices to smart watches, computers to spacecraft. They consist of a set of electronic components such as transistors, resistors, and amplifiers on a semiconductor wafer. But, this is energy consuming, it requires expensive materials and can't follow higher data speeds needed in the future.

So, what's next? Why not using photons (light) instead of electrons for computing and signal processing? Light is faster than electrons, it can be switched more quickly, it can be split into a broad spectrum of colours (and therefore frequencies) instantly increasing the number of signals that can be sent and it doesn't generate the same amount of waste heat as conventional IC's. Much of the functionality of these conventional, Integrated Circuits could be replaced by working with light instead of electrons. But to be able to use light, we need a new type of integrated circuit, called a Photonic Integrated Circuit (PIC). This is an IC with other components than conventional IC's, such as photonic components, including lasers (used to generate light signals that represent 0's or a 1's) and waveguides (used to guide light signals) onto a single chip. These PIC's are often also called "silicon photonics", because silicon is used as a medium.

In the beginning this was all prototyping, lots of trail and error, because light isn't as easy as electrons. It has to be reflected using mirrors and guided trough the circuit without unwanted light losses due to signal attenuation over long distance or absorbation along the way.

During the past 2 decades, our world's smartest engineers have been really busy. Today we have developed fully functional PIC's, already in the market. So, we CAN use light. It's perfectly possible. But why doesn't people know this? That's because the assembly of a PIC is difficult because it requires a lot of labor, it's all hand work, and this manufacturing issue leads to scalability issues and, this make PIC's more expensive (purchase price) than IC's. For example Intel is doing it this way and already shipping high volumes of PIC’s. Datacenter suppliers pay for it.

But guess what, there has been developed kind of 3D printing techniqu