I’m returning to the full-adder logic circuit modeling to present the code for a version that tries to capture the timing of the signals.

The goal is to take a closer look at the intermediate states of the adder as signals trickle through it.

**14**
*Tuesday*
May 2019

Posted CS101

inI’m returning to the full-adder logic circuit modeling to present the code for a version that tries to capture the timing of the signals.

The goal is to take a closer look at the intermediate states of the adder as signals trickle through it.

**10**
*Friday*
May 2019

Posted Fun

in**Tags**

Lately I’ve been exploring the idea of a vector space with a large number of dimensions (but few degrees of freedom). A model was presented with five degrees of freedom in 500 dimensions (neurons, as it happens).

The question is, given the axes are bit-level, does normal vector manipulation semantics make sense. My contention is it has severe problems.

**08**
*Wednesday*
May 2019

Posted CS101

inThis is the third post in the **Full Adder** series. The first post explored ways to code the abstract model of a full-adder. The second post explored one way to code a simulation of a physical system (where the models are of the components of the system).

This post explores another gate-based model, but one with only one type of gate. This simulation is close to being transistor-level.

**07**
*Tuesday*
May 2019

Posted CS101

inIn the last post, I explored different ways to model the *logic* of a **full-adder**. In this post I’ll explore a model of a *physical instance* of a full-adder — a model that *simulates* physical reality.

Because a full-adder is, at root, a mathematical expression, various software models can accomplish the same results. Models are abstractions, so the only thing a model can simulate *perfectly* is another model.

**05**
*Sunday*
May 2019

Posted CS101

in**Tags**

finite state machine, FSA, FSM, full adder, half adder, Python, state engine, state table, truth table

I was involved in a debate recently about whether a full adder logic circuit is a computer. The computer science answer is: *“No, not as we define a computer.”*

I plan to address that answer in detail on my main blog. Here I wanted to show some of the different ways a full adder can be modeled and implemented.