Yup.When the user pushes a button to increase the A input value, it adds 1 to the 7 segment and 1 to the binary.
There are a few ways we can prevent the final result from being displayed until the user is finished selecting the two input values. A toggle switch could work depending on how it is wired into the circuit.That binary number goes to the adder when the user is done selecting what value they want. (I will use a toggle switch to send the inputs to the adder)
So far, so good.Is everything correct?
Personally, I'm not a fan of circuit simulations. You'll spend a lot of time looking for or configuring a chip to match a datasheet, then spend more time learning the nuances of the program, all to simulate something you're going to build and test anyway. Don't get me wrong, simulations have their place - if you're designing an extremely complex circuit and really want to make sure you're getting the right parts and that it will work as intended, then they are the way to go.Also, should I test this in some computer program or should I just draw it in a piece of paper? If I should use a computer program, what free program should I use. I tried tina and spice but they don't have any of the chips I need (I dont think)
For hobbyist circuits like these, I recommend drawing the schematic so you know what you're building and can document changes as you test it, then building it. For that, you can use MS Paint, Visio, ExpressPCB, or just draw it on paper. Drawing with a computer program will make it easier to document, save, make changes, and share if you choose to. Using ExpressPCB schematic capture is probably the quickest and simplest at this point. If it doesn't list the IC you're using, just pick a blank one with the same number of pins. You're aiming to draw the circuit, not simulate it (unless you choose to).
Just remember to save often and save multiple versions. I start by making my basic circuit. Once done, everytime I add or change something, I choose Save As and save the modified version by that day's date. This helps me in case I make a goof somewhere and need to go back to an earlier design of the circuit.