4-Bit Calculator 1.0

posted by Idgo211 on Thu, 2016-07-21 21:40
Build image: 
In-game name (NO VISITORS! Must be LEARNER rank or higher!): 
Idgo211
Builder name(s) and current ranks: 
Idgo211: Learner
Creation location: 
784, 58, -190 (Learner Plots)
Machine Features: 

Machine features two 4-Bit Inputs, A and B. There are also 3 levers to the side. Based on the selected lever, the 2 inputs are Added, Subtracted, or Multiplied. The subtraction mode is A-B, and negative numbers get a bit iffy. The addition is achieved by 4 full ICA adders. Subtraction, using 2's complement, is achieved by toggling inverters on the B inputs and adding 1 to the carry in. The multiplication is made from combinational AND gates and adders. There is one main control room with the inputs, selectors, outputs, and some info signs. The control room also features a glass floor with my username embedded in.

How To Use: 

To use the machine: Find the main inputs. These are 2 rows of 4 levers. If the lever is facing down, it's off. Up means on. These represent binary inputs A and B. A is the top row, by the way. Least Significant Bit is on the right. Select your inputs. For example, 5 + 3 wold be:
0101
0011
Then, to the right are three labeled levers. The left is add, middle is subtract, and right is multiply. Flip one of these levers up based on the operation you want to perform. Continuing the example, to ADD 5 and 3, flip up the left lever. Then on the left wall are 5 Lamps. These are your binary output. Least Significant Bit is on the right. Read as any binary number.

Request status: 
Not approved

Comments

On Fri, 2016-07-22 14:04

Also, instead of just 4-Bit Calculator, could you call it NORUS 1.0? There's a good reason, trust me.

By Idgo211
woesh0007's picture

On Fri, 2016-07-22 14:27

An adder/subtractor/multiplier like this is not complex enough to obtain [Regular]. The adder design used in the multiplier is even copied from youtube (it was one of the first designs published in a tutorial in the early beta's). To get an idea of what's rank-worthy, type "/commands regular".

Meow,,
Woesh0007

By woesh0007

On Fri, 2016-07-22 23:51

I accept your decline (and am working on my next attempt) but would like to point out one thing. In the 'rank challenges' room in spawn, one of the Regular signs is, and I quote, 'A 4 bit calculator with addition, subtraction, and multiplication.' As for the adders, those are some of the smallest possible ICAs in add/sub and in mult they are my favorite RCAs and half adders. The half adders have been all but proven to be the smallest solid state possible. So with all due respect, I urge you to reconsider your decision.

By Idgo211