Single hexadecimal processor

This is far from an actual processor. This doesn’t even have any memory! An actual processor doesn’t have millions of bits to work with just because it has that many transistors. A 1 bit processor requires hundreds of transistors bare minimum! Modern processors are usually 32 or more commonly 64 bit processors. This means that they can only handle 64 bits at a time. If they want to make an arithmetic calculation they can only do it on 64 bits worth of number at a time. If they want to download a program then they store the program in memory 64 bit chunk by 64 bit chunk. This is VERY far from a processor, let alone a 4 bit one.

Jason claims your circuit doesnt "process". He doesn't know that there is a difference between a central processing unit and processing in general. He will be disappointed to know that I use a single relay as a processor all the time, even without memory. The light switch on the wall is a 1 bit processor, doesn't need memory, modem, or a buss, just a input and a output. What do you think life was like in the early 1900's.

A processor doesn't need memory. This kind of processor takes one form of data, and converts it to another. (in this case it is binary to hexadecimal on a 7-segment display.) There are different kinds of processors in the world. This is just one kind of them.

Your comment sound paradoxal : you said a processor doens't need memory, but you said also that it work on data. And data ARE a type of memory. cpu use registers to store data. In fact, processor always need memory (https://en.wikipedia.org/wiki/Processor_(computing))

a byte is not necessarily 2 hexadecimal digit (8bit), it can ve more, it can be less depending of the machine you are working on. A byte is a set of multiple bits that constitute a unit of information. https://en.wikipedia.org/wiki/Byte

00010010 is not 12 and not even 21, it's 18. https://www.binaryhexconverter.com/binary-to-decimal-converter 12, in binary, is : 00001100 and 21 is : 00010101 Tell me if i missed something, but i think there are many errors in your comments.

rich11292000 the logic source in the circuit consist in a sort of memory (latch). Except that input are user-triggered.

I know I'll sound crazy (because I am) responding to a year old comment, but I took the time to actually learn electronics and computing stuff and I'm pretty sure the convention is that a byte is eight bits.