Weird Fact... Try Googling This... It Is TRUE.Basically, The C++ Committee (Who Decides Everything C++)

Weird fact... try googling this... it is TRUE. Basically, the C++ Committee (Who decides everything C++) have never named a mascot. And so if you google for C++ mascot. Google will show you the most used picture for that phrase. This picture. So the answer to "What is the C++ mascot" is.... this

Yep. Not only seeing ways for developers to communicate in ways that are both pruductive AND nice.

People also share their struggle, not only their catastrophes and successes. Which is far more important to deal with than the two other ones.

And people share learning/knowledge resources so you can save them, and find them when you need them for things!

It brings a MUCH better real view into how developers and people are. Because no one here is losing their job or real life status if they complain about their firms Management flaws.

So I'm new to Tumblr and I really hate social media in general...

I'm about my business, I'm a developer coding 24/7, would tumblr bring something unique to the table?

Just... Yeah...

Yep. Also... Doing things you like and are proud of is good for your mental health. Which makes you more productive ( A bit like how physical training does )

I am right now learning Ruby ( for a potential job ) while training my C++ skill back to what they used to be :p

“it’ll take too long to learn xyz”

learning is everlasting. you do it everyday. you are now just being intentional with where your attention and energy is going. why aim for mastery when you can aim for enlightenment?

the time will pass anyway. do it. learn it. no one is stopping you but you! don’t waste anymore time wishing you were a genius from day 1 then continue staying in the same place. 1 year forward, you’ll wish you had started. stop that cycle and just start now.

the future you bears the fruit the present you labors.

growth is beautiful, don’t knock it.

What is half-adder and full-adder combinational circuits?

So this question came up in the codeblr discord server, and I thought I would share my answer here too :3

First, a combinational circuit simply means a circuit where the outputs only depends on its input. ( combinational means "Combine" as in, combining the inputs to give some output )

It is a bit like a pure function. It is opposed to circuits like latches which remembers 1 bit. Their output depends on their inputs AND their state.

These circuits can be shown via their logic gates, or truth tables. I will explain using only words and the circuits, but you can look up the truth tablet for each of the circuits I talk about to help understand.

Ok, so an in the case of electronics is a circuit made with logic gates ( I... assume you know what they are... Otherwise ask and I can explain them too ) that adds 2 binary numbers, each which have only 1 character. 

So one number is 1 or 0

And the other number is 1 or 0

So the possible outputs are are 0, 1 and 2.

Since you can only express from 0 to 1 with one binary number, and 0 to 3 with 2, we need to output 2 binary numbers to give the answer. So the output is 2 binary numbers

00 = 0

01 = 1

10 = 2

11 = 3 // This can never happen with a half adder. The max possible result is 2

Each character will be represented with a wire, and a wire is a 0 if it is low voltage (usually ground, or 0 volts) and a 1 if it is high voltage (Voltage depends. Can be 5 volts, 3.3, 12  or something else. )

BUT if you only use half adders, you can ONLY add 2 single character binary numbers together. Never more.

If you want to add more together, you need a full adder. This takes 3 single character binary numbers, and adds them and outputs a single 2 character number.

This means it have 3 inputs and 2 outputs.

We have 2 outputs because we need to give a result that is 0, 1, 2 or 3

Same binary as before, except now we CAN get a 11 (which is 3)

And we can chain full adders together to count as many inputs as we want.

So why ever use a half adder? Well, every logic gate cirquit can be made of NAND (Not and) gates, so we usually compare complexity in how many NAND gates it would take to make a circuit. More NAND gates needed means the circuit is slower and more expensive to make.

A half adder takes 5 NAND gates to make

A full adder takes 9 NAND gates.

So only use a full adder if you need one.

Geeks for Geeks have a page for each of the most normal basic cirquits:

GeeksforGeeks

Half Adder in Digital Logic - GeeksforGeeks

A Computer Science portal for geeks. It contains well written, well thought and well explained computer science and programming articles, qu

I hope that made sense, and was useful :3

I scared the dog with my sudden screaming laughter...